convert: introduce hg.revs to replace hg.startrev and --rev with a revset
The existing knobs for controlling which revisions to convert were often
insufficient. Revsets is a shiny hammer that provides a better solution.
Revsets has been introduced in --rev handling in a lot of other places while
being more or less backwards compatible. Doing the same here would be a much
more elegant ... but that would unfortunately not work in this case. "--rev 7"
used to mean revision 0 to 7 - it would be an unacceptable change if it
suddenly just meant revision 7.
Instead we introduce a new configuration setting. It will only work for
Mercurial repositories so adding a new commandline option for it would not be a
nice solution.
There is no way to use the fancy deprecation markup for configuration settings
so we just remove the documentation of hg.startrev.
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.