[DRE-maint] Bug#857650: Bug#857650: ruby-json: Please build java extension

[Christian Hofstaedtler]

* Miguel Landaeta <nomadium at debian.org> [170313 19:45]:
> I noticed ruby-json Java extension was not being built from this
> package.
> 
> So, since I need that to get JRuby unit tests passing and it should be
> useful for real-world users, I added that missing component to this
> package.
> 
> If there are no objections to my approach (please see the debdiff
> below), I was planning to merge this and do an upload to experimental
> very soon.

Looks mostly good to me.

One thing:

> diff -Nru ruby-json-2.0.1+dfsg/debian/control ruby-json-2.0.1+dfsg/debian/control
> --- ruby-json-2.0.1+dfsg/debian/control	2016-12-05 23:33:24.000000000 +0000
> +++ ruby-json-2.0.1+dfsg/debian/control	2017-03-13 11:54:41.000000000 +0000
> @@ -6,7 +6,11 @@
>             Antonio Terceiro <terceiro at softwarelivre.org>,
>             Cédric Boutillier <boutil at debian.org>
>  Build-Depends: debhelper (>= 9~),
> +               default-jdk,
>                 gem2deb,
> +               git,
                  ^^^

Is git actually needed for the build?
As far as I can see from the build log, the git call ends up
emitting just this error:

> fatal: Not a git repository (or any of the parent directories): .git

   -ch