Log Message:
Update py-tortoisehg to 3.7.1:

TortoiseHg 3.7.1

TortoiseHg 3.7.1 is a feature release. TortoiseHg 3.7 was never
packaged since there was a hot-fix necessary for Mercurial 3.7.

Bug Fixes

    cmdui: backport more robust parsing of prompt choices (fixes #4423)
    commit: include ignored files if explicitly selected (fixes #4422)
    docklog: stop shell expansion if command-line token looks quoted (fixes #4312)
    fileview: invert colors of excluded chunks on dark theme (refs #810)
    lfprompt: catch Abort caused by invalid largefiles.patterns (fixes #4397)
    merge: don't call other revision as "target" (fixes #4413)
    nautilus: fix the extension for Nautilus 3.16+ (fixes #4228)
    repowidget: label "reject bundle" button as "cancel" \ 
(closes #4292)
    repotreeitem: keep root paths in unicode (fixes #3723)

Improvements

    introduce a GUI lock tool
    repowidget: add "Revert all Files" context menu (closes #4337)
    settings: resurrect field for ui.editor
    sync: add browse button to the synchronize window (closes #4394)

Installer

    setup: add support for building OS X application bundles