The Great Rewrite (fixes #36, #61, #94, #101)

Rewrite of the file model and pulling mechanism. Needs lots of cleanup
and bugfixes, now...

protocol/wireformat.go

@@ -0,0 +1,35 @@
+package protocol
+
+import (
+	"path/filepath"
+
+	"code.google.com/p/go.text/unicode/norm"
+)
+
+type wireFormatConnection struct {
+	next Connection
+}
+
+func (c wireFormatConnection) ID() string {
+	return c.next.ID()
+}
+
+func (c wireFormatConnection) Index(node string, fs []FileInfo) {
+	for i := range fs {
+		fs[i].Name = norm.NFC.String(filepath.ToSlash(fs[i].Name))
+	}
+	c.next.Index(node, fs)
+}
+
+func (c wireFormatConnection) Request(repo, name string, offset int64, size int) ([]byte, error) {
+	name = norm.NFC.String(filepath.ToSlash(name))
+	return c.next.Request(repo, name, offset, size)
+}
+
+func (c wireFormatConnection) Statistics() Statistics {
+	return c.next.Statistics()
+}
+
+func (c wireFormatConnection) Option(key string) string {
+	return c.next.Option(key)
+}