clarifications about the format of svc_fog

clarifications about the format of svc_fog
precache name overflow checks
gl_screen.c - whitespace changes?
sky name overflow checks
"tell" buffer overflow improvement (not really a fix)
edict parsing buffer increase (not really a fix)
increased number of leafs per entity from 64 to 256 (mem hog...  but fixes fall2.bsp  note: quake used 16 and did not have a problem with fall2?) and added warning when it runs out
removed rotating pusher hack and added solid checking
non-working MOVETYPE_FOLLOW rotation support (in-progress)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@130 d7cf8633-e32d-0410-b094-e92efae38249