py3: convert opts to bytes in cmdutil.dorecord()
commands.commit() calls cmdutil.dorecord() where opts are passed as unicodes
being keyword arguments. This patch converts them back to bytes as they are
required.
$ hg init
$ touch unknown
$ touch a
$ hg add a
$ hg ci -m "1"
$ touch b
$ hg add b
$ hg ci -m "2"
Should show unknown
$ hg status
? unknown
$ hg revert -r 0 --all
removing b
Should show unknown and b removed
$ hg status
R b
? unknown
Should show a and unknown
$ ls
a
unknown