Normalize file name format in on disk db (fixes #479)

files/filenames_windows.go

@@ -0,0 +1,15 @@
+package files
+
+import (
+	"path/filepath"
+
+	"code.google.com/p/go.text/unicode/norm"
+)
+
+func normalizedFilename(s string) string {
+	return norm.NFC.String(filepath.ToSlash(s))
+}
+
+func nativeFilename(s string) string {
+	return filepath.FromSlash(s)
+}