test-revert: add methodical revert to parent for working directory
Now that we can automatically generate states, we need to actually run
revert on them and check the result. While running such tests we are
checking multiple elements. The output of the `hg revert` command, the
resulting content of file, and the creation of backup file.
The first practical test is using the simple case `hg revert --all`, reverting
all files to working directory parent content.
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
for software developers.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
Running without installing:
$ make local # build for inplace usage
$ ./hg --version # should show the latest version
See http://mercurial.selenic.com/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.