Renderer-based particle system (#25)

* A WIP particle system

* - Some more particle refactoring
- an attempt to fix things that went wrong
- trying to integrate fog onto particles (which is currently wrong)
- qpal.h committed (oops)
- Attempt to separate particle rendering from particle moving for future optimization/refactor

code/cgame/cg_syscalls.asm

@@ -103,4 +103,4 @@ equ	ceil						-109
 equ	testPrintInt				-110
 equ	testPrintFloat				-111
 equ acos						-112
-
+equ trap_R_LFX_ParticleEffect				-113