Add -X support for Mercurial.

Review Request #6331 — Created Sept. 16, 2014 and submitted — Latest diff uploaded

Information

RBTools
master
836f1c8...

Reviewers

The Mercurial backend now supports the -X/--exclude option.

Add unit tests for excluding files from Mercurial diffs.

Unit tests pass.
Posted review request to development server that excluded files.