[MERGED] Revision 2053 from the Release1.9 branch.
[MERGED] Revision 2053 from the Release1.9 branch.

Updated Source Guidelines. Also wanted to make sure we don't merge Revision 2053 so I put this fake MERGED statement. I want this to be the format moving forward.

jeuvin/Subtext,Haacked/Subtext,jeuvin/Subtext,jeuvin/Subtext,Haacked/Subtext,Haacked/Subtext,Haacked/Subtext,jeuvin/Subtext,jeuvin/Subtext,Haacked/Subtext