Pass functions by reference to BI event handlers

[mharis001]

When merged this pull request will:

• Pass functions by reference to addEventHandler and addMissionEventHandler
  Should provide a slight performance improvement

[654wak654]

Isn't this what the LINKFUNC macro already does?

[dedmen]

ACE3/addons/main/script_debug.hpp

Lines 7 to 15 in 81e02a7

	#ifdef DISABLE_COMPILE_CACHE
	#define LINKFUNC(x) {_this call FUNC(x)}
	#define PREP_RECOMPILE_START if (isNil "ACE_PREP_RECOMPILE") then {ACE_RECOMPILES = []; ACE_PREP_RECOMPILE = {{call _x} forEach ACE_RECOMPILES;}}; private _recomp = {
	#define PREP_RECOMPILE_END }; call _recomp; ACE_RECOMPILES pushBack _recomp;
	#else
	#define LINKFUNC(x) FUNC(x)
	#define PREP_RECOMPILE_START /* */
	#define PREP_RECOMPILE_END /* */
	#endif

[commy2]

Btw, LINKFUNC() should be changed to {call FUNC()}.