Adding language file for Apache Pig to GtkSourceView

[Eyal Allweil <eyal_allweil yahoo com>]

Hi guys,

Can someone take a look at the patch (and test file) for Apache Pig that I put on this Bugzilla bug?

https://bugzilla.gnome.org/show_bug.cgi?id=735319

I'd love to see it as part of GtkSourceView, but it's my first patch and though I tried to follow the best practices, there might still be something wrong. It would be awesome if GtkSourceView editors (gedit!) worked out-of-the-box for Pig. I've already added the file on the gedit "additional languages" page, and instructions for it on the Pig "Tools" wiki.

https://cwiki.apache.org/confluence/display/PIG/PigTools

Thanks,

Eyal