[bug#49886] [PATCH v2] Add gitile and gitile service

[Julien Lepiller]

Thanks for the feedback!

attached is a v2 of the series. I added a small change to gitolite that
allows changing UNSAFE_PATT (a regex that matches configuration values
that contain unsafe characters). I wanted to link to it and to the
nginx configuration sections in the manual, but I don't know how to
create that link? I see the @subsubheading NGINX for instance, but I
can't @ref{NGINX}.

I had to update gitile for the tests to pass and had a few false
starts, but now the tests pass and gitile is working even better than
before :)

0001-gnu-Add-gitile.patch
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0002-gnu-gitolite-Add-unsafe-patt-configuration-option.patch
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0003-gnu-version-control-Add-gitile-service.patch
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