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)
unknown
0acdaf898367 tip
0acdaf8983679e0aac16e811534eb49d7ee1f2b4 first
tip 1:8a3ca90d111dc784e6575d373105be12570e8776
first 0:0acdaf8983679e0aac16e811534eb49d7ee1f2b4
8a3ca90d111d tip
M a
8a3ca90d111d+ tip
0acdaf898367+ first
0acdaf8983679e0aac16e811534eb49d7ee1f2b4+ first
M a
8216907a933d tip
8216907a933d+8a3ca90d111d+ tip
M .hgtags
.hgtags:2: ignoring invalid tag
.hgtags:4: ignoring invalid tag
localtags:1: ignoring invalid tag
tip 4:fd868a874787a7b5af31e1675666ce691c803035
first 0:0acdaf8983679e0aac16e811534eb49d7ee1f2b4
changeset: 4:fd868a874787
.hgtags:2: ignoring invalid tag
.hgtags:4: ignoring invalid tag
localtags:1: ignoring invalid tag
tag: tip
user: test
date: Mon Jan 12 13:46:40 1970 +0000
summary: tags