Implement Mercurial support in Python layer

[lefebvre]

This issue will address all implementation of Mercurial in the Python layer.
Initial target is the checkin-test.py script. Ross can elaborate on any further python files which deal with version control.

[bartlettroscoe]

Getting SCALE and Exnihilo developers to use the checkin-test.py script is where huge improvements in development and integration processes can be had that will significantly improve the stability of the master branch.

Adding Mercurial support to the the checkin-test.py script will be the most challenging. I am a little worried that it might not be possible to find Mercurial commands to duplicate the git workflow. But hopefully we should be able to get a set of commands that is close enough to work and be effective and safe.

However, any changes to checkin-test.py to support Mercurial should wait until we have finished #15 or it will create big merge conflicts.

[bartlettroscoe]

@lefebvre, is it still desighed to add Mercurial support to these TriBITS tools? Have your projects moved to git yet?

[bartlettroscoe]

Closing since no response to comment above and it looks like git has completely taken over and more and more projects have switched to git (including SCALE).

Closing as wontfix