Submitting patches wiki page

[Peter Hutterer]

We're seeing a lot of patches lately on the list. We also see a lot of patches
being added to bugs in bugzilla, and I've been telling people to submit git
formatted patches quite frequently. AFAICT, there was no single guide to patch
submission, so a few days back, I added
http://wiki.x.org/wiki/Development/Documentation/SubmittingPatches

I'd appreciate it if this page becomes the official guide to how to submit
patches to the list. Please read and amend if necessary.

Cheers,
  Peter