Use Go 1.5 vendoring instead of Godeps

Change made by:

- running "gvt fetch" on each of the packages mentioned in
  Godeps/Godeps.json
- `rm -rf Godeps`
- tweaking the build scripts to not mention Godeps
- tweaking the build scripts to test `./lib/...`, `./cmd/...` explicitly
  (to avoid testing vendor)
- tweaking the build scripts to not juggle GOPATH for Godeps and instead
  set GO15VENDOREXPERIMENT.

This also results in some updated packages at the same time I bet.

Building with Go 1.3 and 1.4 still *works* but won't use our vendored
dependencies - the user needs to have the actual packages in their
GOPATH then, which they'll get with a normal "go get". Building with Go
1.6+ will get our vendored dependencies by default even when not using
our build script, which is nice.

By doing this we gain some freedom in that we can pick and choose
manually what to include in vendor, as it's not based on just dependency
analysis of our own code. This is also a risk as we might pick up
dependencies we are unaware of, as the build may work locally with those
packages present in GOPATH. On the other hand the build server will
detect this as it has no packages in it's GOPATH beyond what is included
in the repo.

Recommended tool to manage dependencies is github.com/FiloSottile/gvt.

vendor/github.com/onsi/ginkgo/ginkgo/watch/delta.go

@@ -0,0 +1,22 @@
+package watch
+
+import "sort"
+
+type Delta struct {
+	ModifiedPackages []string
+
+	NewSuites      []*Suite
+	RemovedSuites  []*Suite
+	modifiedSuites []*Suite
+}
+
+type DescendingByDelta []*Suite
+
+func (a DescendingByDelta) Len() int           { return len(a) }
+func (a DescendingByDelta) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a DescendingByDelta) Less(i, j int) bool { return a[i].Delta() > a[j].Delta() }
+
+func (d Delta) ModifiedSuites() []*Suite {
+	sort.Sort(DescendingByDelta(d.modifiedSuites))
+	return d.modifiedSuites
+}

vendor/github.com/onsi/ginkgo/ginkgo/watch/delta_tracker.go

@@ -0,0 +1,71 @@
+package watch
+
+import (
+	"fmt"
+
+	"github.com/onsi/ginkgo/ginkgo/testsuite"
+)
+
+type SuiteErrors map[testsuite.TestSuite]error
+
+type DeltaTracker struct {
+	maxDepth      int
+	suites        map[string]*Suite
+	packageHashes *PackageHashes
+}
+
+func NewDeltaTracker(maxDepth int) *DeltaTracker {
+	return &DeltaTracker{
+		maxDepth:      maxDepth,
+		packageHashes: NewPackageHashes(),
+		suites:        map[string]*Suite{},
+	}
+}
+
+func (d *DeltaTracker) Delta(suites []testsuite.TestSuite) (delta Delta, errors SuiteErrors) {
+	errors = SuiteErrors{}
+	delta.ModifiedPackages = d.packageHashes.CheckForChanges()
+
+	providedSuitePaths := map[string]bool{}
+	for _, suite := range suites {
+		providedSuitePaths[suite.Path] = true
+	}
+
+	d.packageHashes.StartTrackingUsage()
+
+	for _, suite := range d.suites {
+		if providedSuitePaths[suite.Suite.Path] {
+			if suite.Delta() > 0 {
+				delta.modifiedSuites = append(delta.modifiedSuites, suite)
+			}
+		} else {
+			delta.RemovedSuites = append(delta.RemovedSuites, suite)
+		}
+	}
+
+	d.packageHashes.StopTrackingUsageAndPrune()
+
+	for _, suite := range suites {
+		_, ok := d.suites[suite.Path]
+		if !ok {
+			s, err := NewSuite(suite, d.maxDepth, d.packageHashes)
+			if err != nil {
+				errors[suite] = err
+				continue
+			}
+			d.suites[suite.Path] = s
+			delta.NewSuites = append(delta.NewSuites, s)
+		}
+	}
+
+	return delta, errors
+}
+
+func (d *DeltaTracker) WillRun(suite testsuite.TestSuite) error {
+	s, ok := d.suites[suite.Path]
+	if !ok {
+		return fmt.Errorf("unknown suite %s", suite.Path)
+	}
+
+	return s.MarkAsRunAndRecomputedDependencies(d.maxDepth)
+}

vendor/github.com/onsi/ginkgo/ginkgo/watch/dependencies.go

@@ -0,0 +1,91 @@
+package watch
+
+import (
+	"go/build"
+	"regexp"
+)
+
+var ginkgoAndGomegaFilter = regexp.MustCompile(`github\.com/onsi/ginkgo|github\.com/onsi/gomega`)
+
+type Dependencies struct {
+	deps map[string]int
+}
+
+func NewDependencies(path string, maxDepth int) (Dependencies, error) {
+	d := Dependencies{
+		deps: map[string]int{},
+	}
+
+	if maxDepth == 0 {
+		return d, nil
+	}
+
+	err := d.seedWithDepsForPackageAtPath(path)
+	if err != nil {
+		return d, err
+	}
+
+	for depth := 1; depth < maxDepth; depth++ {
+		n := len(d.deps)
+		d.addDepsForDepth(depth)
+		if n == len(d.deps) {
+			break
+		}
+	}
+
+	return d, nil
+}
+
+func (d Dependencies) Dependencies() map[string]int {
+	return d.deps
+}
+
+func (d Dependencies) seedWithDepsForPackageAtPath(path string) error {
+	pkg, err := build.ImportDir(path, 0)
+	if err != nil {
+		return err
+	}
+
+	d.resolveAndAdd(pkg.Imports, 1)
+	d.resolveAndAdd(pkg.TestImports, 1)
+	d.resolveAndAdd(pkg.XTestImports, 1)
+
+	delete(d.deps, pkg.Dir)
+	return nil
+}
+
+func (d Dependencies) addDepsForDepth(depth int) {
+	for dep, depDepth := range d.deps {
+		if depDepth == depth {
+			d.addDepsForDep(dep, depth+1)
+		}
+	}
+}
+
+func (d Dependencies) addDepsForDep(dep string, depth int) {
+	pkg, err := build.ImportDir(dep, 0)
+	if err != nil {
+		println(err.Error())
+		return
+	}
+	d.resolveAndAdd(pkg.Imports, depth)
+}
+
+func (d Dependencies) resolveAndAdd(deps []string, depth int) {
+	for _, dep := range deps {
+		pkg, err := build.Import(dep, ".", 0)
+		if err != nil {
+			continue
+		}
+		if pkg.Goroot == false && !ginkgoAndGomegaFilter.Match([]byte(pkg.Dir)) {
+			d.addDepIfNotPresent(pkg.Dir, depth)
+		}
+	}
+}
+
+func (d Dependencies) addDepIfNotPresent(dep string, depth int) {
+	_, ok := d.deps[dep]
+	if !ok {
+		d.deps[dep] = depth
+	}
+}

vendor/github.com/onsi/ginkgo/ginkgo/watch/package_hash.go

@@ -0,0 +1,103 @@
+package watch
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"regexp"
+	"time"
+)
+
+var goRegExp = regexp.MustCompile(`\.go$`)
+var goTestRegExp = regexp.MustCompile(`_test\.go$`)
+
+type PackageHash struct {
+	CodeModifiedTime time.Time
+	TestModifiedTime time.Time
+	Deleted          bool
+
+	path     string
+	codeHash string
+	testHash string
+}
+
+func NewPackageHash(path string) *PackageHash {
+	p := &PackageHash{
+		path: path,
+	}
+
+	p.codeHash, _, p.testHash, _, p.Deleted = p.computeHashes()
+
+	return p
+}
+
+func (p *PackageHash) CheckForChanges() bool {
+	codeHash, codeModifiedTime, testHash, testModifiedTime, deleted := p.computeHashes()
+
+	if deleted {
+		if p.Deleted == false {
+			t := time.Now()
+			p.CodeModifiedTime = t
+			p.TestModifiedTime = t
+		}
+		p.Deleted = true
+		return true
+	}
+
+	modified := false
+	p.Deleted = false
+
+	if p.codeHash != codeHash {
+		p.CodeModifiedTime = codeModifiedTime
+		modified = true
+	}
+	if p.testHash != testHash {
+		p.TestModifiedTime = testModifiedTime
+		modified = true
+	}
+
+	p.codeHash = codeHash
+	p.testHash = testHash
+	return modified
+}
+
+func (p *PackageHash) computeHashes() (codeHash string, codeModifiedTime time.Time, testHash string, testModifiedTime time.Time, deleted bool) {
+	infos, err := ioutil.ReadDir(p.path)
+
+	if err != nil {
+		deleted = true
+		return
+	}
+
+	for _, info := range infos {
+		if info.IsDir() {
+			continue
+		}
+
+		if goTestRegExp.Match([]byte(info.Name())) {
+			testHash += p.hashForFileInfo(info)
+			if info.ModTime().After(testModifiedTime) {
+				testModifiedTime = info.ModTime()
+			}
+			continue
+		}
+
+		if goRegExp.Match([]byte(info.Name())) {
+			codeHash += p.hashForFileInfo(info)
+			if info.ModTime().After(codeModifiedTime) {
+				codeModifiedTime = info.ModTime()
+			}
+		}
+	}
+
+	testHash += codeHash
+	if codeModifiedTime.After(testModifiedTime) {
+		testModifiedTime = codeModifiedTime
+	}
+
+	return
+}
+
+func (p *PackageHash) hashForFileInfo(info os.FileInfo) string {
+	return fmt.Sprintf("%s_%d_%d", info.Name(), info.Size(), info.ModTime().UnixNano())
+}

vendor/github.com/onsi/ginkgo/ginkgo/watch/package_hashes.go

@@ -0,0 +1,82 @@
+package watch
+
+import (
+	"path/filepath"
+	"sync"
+)
+
+type PackageHashes struct {
+	PackageHashes map[string]*PackageHash
+	usedPaths     map[string]bool
+	lock          *sync.Mutex
+}
+
+func NewPackageHashes() *PackageHashes {
+	return &PackageHashes{
+		PackageHashes: map[string]*PackageHash{},
+		usedPaths:     nil,
+		lock:          &sync.Mutex{},
+	}
+}
+
+func (p *PackageHashes) CheckForChanges() []string {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	modified := []string{}
+
+	for _, packageHash := range p.PackageHashes {
+		if packageHash.CheckForChanges() {
+			modified = append(modified, packageHash.path)
+		}
+	}
+
+	return modified
+}
+
+func (p *PackageHashes) Add(path string) *PackageHash {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	path, _ = filepath.Abs(path)
+	_, ok := p.PackageHashes[path]
+	if !ok {
+		p.PackageHashes[path] = NewPackageHash(path)
+	}
+
+	if p.usedPaths != nil {
+		p.usedPaths[path] = true
+	}
+	return p.PackageHashes[path]
+}
+
+func (p *PackageHashes) Get(path string) *PackageHash {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	path, _ = filepath.Abs(path)
+	if p.usedPaths != nil {
+		p.usedPaths[path] = true
+	}
+	return p.PackageHashes[path]
+}
+
+func (p *PackageHashes) StartTrackingUsage() {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	p.usedPaths = map[string]bool{}
+}
+
+func (p *PackageHashes) StopTrackingUsageAndPrune() {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+
+	for path := range p.PackageHashes {
+		if !p.usedPaths[path] {
+			delete(p.PackageHashes, path)
+		}
+	}
+
+	p.usedPaths = nil
+}

vendor/github.com/onsi/ginkgo/ginkgo/watch/suite.go

@@ -0,0 +1,87 @@
+package watch
+
+import (
+	"fmt"
+	"math"
+	"time"
+
+	"github.com/onsi/ginkgo/ginkgo/testsuite"
+)
+
+type Suite struct {
+	Suite        testsuite.TestSuite
+	RunTime      time.Time
+	Dependencies Dependencies
+
+	sharedPackageHashes *PackageHashes
+}
+
+func NewSuite(suite testsuite.TestSuite, maxDepth int, sharedPackageHashes *PackageHashes) (*Suite, error) {
+	deps, err := NewDependencies(suite.Path, maxDepth)
+	if err != nil {
+		return nil, err
+	}
+
+	sharedPackageHashes.Add(suite.Path)
+	for dep := range deps.Dependencies() {
+		sharedPackageHashes.Add(dep)
+	}
+
+	return &Suite{
+		Suite:        suite,
+		Dependencies: deps,
+
+		sharedPackageHashes: sharedPackageHashes,
+	}, nil
+}
+
+func (s *Suite) Delta() float64 {
+	delta := s.delta(s.Suite.Path, true, 0) * 1000
+	for dep, depth := range s.Dependencies.Dependencies() {
+		delta += s.delta(dep, false, depth)
+	}
+	return delta
+}
+
+func (s *Suite) MarkAsRunAndRecomputedDependencies(maxDepth int) error {
+	s.RunTime = time.Now()
+
+	deps, err := NewDependencies(s.Suite.Path, maxDepth)
+	if err != nil {
+		return err
+	}
+
+	s.sharedPackageHashes.Add(s.Suite.Path)
+	for dep := range deps.Dependencies() {
+		s.sharedPackageHashes.Add(dep)
+	}
+
+	s.Dependencies = deps
+
+	return nil
+}
+
+func (s *Suite) Description() string {
+	numDeps := len(s.Dependencies.Dependencies())
+	pluralizer := "ies"
+	if numDeps == 1 {
+		pluralizer = "y"
+	}
+	return fmt.Sprintf("%s [%d dependenc%s]", s.Suite.Path, numDeps, pluralizer)
+}
+
+func (s *Suite) delta(packagePath string, includeTests bool, depth int) float64 {
+	return math.Max(float64(s.dt(packagePath, includeTests)), 0) / float64(depth+1)
+}
+
+func (s *Suite) dt(packagePath string, includeTests bool) time.Duration {
+	packageHash := s.sharedPackageHashes.Get(packagePath)
+	var modifiedTime time.Time
+	if includeTests {
+		modifiedTime = packageHash.TestModifiedTime
+	} else {
+		modifiedTime = packageHash.CodeModifiedTime
+	}
+
+	return modifiedTime.Sub(s.RunTime)
+}