Add 3.5 release to the getting started page.

Hi, I noticed that the 3.5 release wasn’t listed on the getting started page (http://llvm.org/docs/GettingStarted.html) in the “Checkout LLVM from Subversion” section. Could someone add it? It might be useful, especially since the format was changed to RELEASE_350/release.

Regards,
Jan

I wrote the format wrong it should be RELEASE_350/final.