Mercurial support

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Working with Mercurial subrepositories

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Example usage of Subrepos with Kallithea::

    ## init a simple repo

    hg init repo1

    cd repo1

    echo "file1" > file1

    hg add file1

    hg ci --message "initial file 1"

    #clone subrepo we want to add

    hg clone http://kallithea.local/subrepo

    ## use path like url to existing repo in Kallithea

    echo "subrepo = http://kallithea.local/subrepo" > .hgsub

    hg add .hgsub

    hg ci --message "added remote subrepo"

In the file list of a clone of ``repo1`` you will see a connected

subrepo at the revision it was at during cloning. Clicking in

subrepos link should send you to the proper repository in Kallithea.

Cloning ``repo1`` will also clone the attached subrepository.

Next we can edit the subrepo data, and push back to Kallithea. This will update

both of the repositories.

See http://mercurial.aragost.com/kick-start/en/subrepositories/ for more

information about subrepositories.