py3: use pycompat.fsencode() to convert __file__ to bytes
__file__ returns unicodes on Python 3. This patch uses pycompat.fsencode() to
convert them to bytes.
fixbundle() {
grep -v 'saving bundle' | grep -v 'saved backup' | \
grep -v added | grep -v adding | \
grep -v "unable to find 'e' for patching" | \
grep -v "e: No such file or directory" | \
cat
}