Mercurial fixes#51

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cdevienne wants to merge 2 commits intoAndrewRayCode:masterfrom

cdevienne:master

Commits on Dec 6, 2013

Disable localized mercurial output when checking "hg prompt abort" output, so that grep will find what it expect.
cdevienne
committed

Commits on Dec 9, 2013

Check .hg/branch existence before reading it.
cdevienne
committed