Reimplement CFG protocol command

General: * Disabled building of libopenalbridge (why build/link everywhere even if not used?; fails due to cc1 being unable to find some files on Win32) Engine: * Show Lua errors as 'chat messages' * Added ability to write to chat buffer even while the engine is still loading (limited to 26 lines)

Restore test for already used nick

New approach to the low-res problem. Basically, we already have a 1024 minimum, and the tallest maps are restricting themselves to 2048 maximum. All backgrounds are scaled down 50%, then scaled up on draw. Saves memory, and backgrounds are already deliberately fuzzed for depth of field anyway.

Partially reimplement joining rooms

update the project to ios4 by removing pre-3.2 references add missing lowres image other smaller fixes