Change lighting model for new maps to allow better overbrightness.
Cache player colours instead of loading from scripts every time the
renderer wants them.
This was SVN commit r9123.
added player_id_t typedef and INVALID_PLAYER, use that instead of -1.
also added sanity checks to cpu.cpp to ensure ARCH_* is correct (see
http://www.wildfiregames.com/forum/index.php?showtopic=13327&hl=)
and further predefined macros to arch.h just to be sure.
This was SVN commit r8079.