you can now (try to) play in maps you don't have, and models you don't have are shown...

you can now (try to) play in maps you don't have, and models you don't have are shown as little multicolored things
added CL_BoundingBoxForEntity to clean up the various mins/maxs calculations in the engine
no longer spews clc_nops to server past the first signon stage
the clc_nops sent to the server are now sent using unreliable packets (because queuing them up as reliable made no sense and spewed warnings when developer was on)
failed client to server reliable messages now print a hexdump of the message contents when developer is on
there is now Mod_PointContents (this is different than Mod_PointInLeaf because a lot of calls to Mod_PointInLeaf were just wanting the contents, and it's not convenient to check for NULL (no world model) in the caller
r_speeds no longer reports a "walls" count, as it was often nearly identical to faces and simplified the code to remove it
r_speeds faces count may count bmodels twice if some contain sky polygons (this is less technically correct, but more performance correct - it is processing the faces twice)
DrawQ_Pic won't crash if given a NULL picname now (won't draw it either)
r_cullsurfaces cvar added
r_surfacesworldnode cvar added
surface backface culling moved to PrepareSurfaces
simplified a lot of worldnode related stuff
surf->pvsframe and node->pvsframe and leaf->pvsframe simplified worldnode code, and only needs updating when leaf changes (this is partly how quake did things)
leaf->visframe no longer exists, this meant changing/cleaning a lot of code
leaf->dlightbits and leaf->dlightframe no longer exist, this meant doing TraceLine's to see if dlights should shine on models and such (but only if within radius of them)
console is forced if there's nothing else to look at, this is tracked separately from whether the user wants a console (key_consoleactive is now bits, but most code should just check if it is non-zero)
RecursiveHullCheckPoint has been enabled again, only invoked if trace length is exactly 0
SZ_GetSpace overflow warnings/errors have newlines at the end now
R_VisibleCullBox is gone (it relied on leaf->visframe), uses R_CullBox instead
move around some R_NewMap code into more suitable modules
rearranged R_RenderView code a lot, to group things more appropriately
dlights work correctly on bmodels now
PR_Crash function added, to properly shutdown progs interpreter (reset it's stack) and print out a crash report
PR_RunError went away, it has been replaced by Host_Error (which now calls PR_Crash incase it happend during progs execution)
R_ResetQuakeSky and R_ResetSkyBox added, to clean up some sky related hacks in model loading
various QC builtins added for getting info on surfaces from the engine

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2328 d7cf8633-e32d-0410-b094-e92efae38249