another attempt to move mem stat into base class
replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.
that were dropped in merge
re-introduced don's refactor of low-level openGL calls pulling out of llui and putting them into llrender. Took the new code from their updated versions from the CHUI merge, but put them in a place accessible to appearance utility.
Richard Linden