Enforce correct filename normalization (fixes #96)

cmd/syncthing/normalize_darwin.go

@@ -0,0 +1,11 @@
+//+build darwin
+
+package main
+
+import "code.google.com/p/go.text/unicode/norm"
+
+// FSNormalize returns the string with the required unicode normalization for
+// the host operating system.
+func FSNormalize(s string) string {
+	return norm.NFD.String(s)
+}