rewrite revert command. fix issues 93, 123, 147. new version does these things: - saves backup copies of modified files (issue 147) - prints output like other commands, and errors when files not found (issue 123) - marks files added/removed (issue 93)

0
0
adding changesets
killed!
transaction abort!
rollback completed
00changelog.d
00changelog.i
data
journal.dirstate