2 new cvars: sv_gameplayfix_unstickentities and sv_gameplayfix_unstickplayers to...

2 new cvars: sv_gameplayfix_unstickentities and sv_gameplayfix_unstickplayers to enable/disable unsticking checks, added a couple of VF_ parms for csqc setview to control fog (so CSQC viewports can have different fog settings). Rearranged fog update (moved all update code from R_UpdateVariables to R_UpdateFog which is called for each viewport render), so can have different fog settings for several viewports. Added back cvar r_transparent_sortmindist.

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11289 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=d35a3da5c044ae514578d133eced5a9e8ee17bb0