-Fix a bug that caused a client to only be sent their own ping time, not the ping time of other clients as well.

git-svn-id: http://odamex.net/svn/root/trunk@4558 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Fix a bug that did not call the cvar callback function for vid_gammatype, introduced in r4514

git-svn-id: http://odamex.net/svn/root/trunk@4559 b0bcef46-2027-0410-bd56-ab726e9a1d04