Make it easy to pack more variables into usercmd_t
Merge remote-tracking branch 'upstream/master'

Conflicts:
	code/game/bg_misc.c
	code/game/bg_misc.h
Remove unnneeded TA_WEAPSYS_EX_COMPAT from bg_misc
Update TA_HOLDSYS and TA_WEAPSYS_EX UserCmdValue related code