Increased EVENT_NAME_LENGTH and some more cleanups

Fixed an invalid reference in clif.c(follow up to 008be23)
Moved the OnWhisperGlobal name definition to the other special event name declarations
Increased EVENT_NAME_LENGTH from 51 to 77 characters because it uses NPCs exname which can be up to 50 characters now
Added a warning when an NPCs exname is too long for an OnWhisperEvent

src/map/script.c

@@ -185,6 +185,7 @@ struct Script_Config script_config = {
 	1, // warn_func_mismatch_argtypes
 	1, 65535, 2048, //warn_func_mismatch_paramnum/check_cmdcount/check_gotocount
 	0, INT_MAX, // input_min_value/input_max_value
+	// NOTE: None of these event labels should be longer than <NAME_LENGTH> characters
 	"OnPCDieEvent", //die_event_name
 	"OnPCKillEvent", //kill_pc_event_name
 	"OnNPCKillEvent", //kill_mob_event_name
@@ -196,6 +197,7 @@ struct Script_Config script_config = {
 	"OnPCStatCalcEvent", //stat_calc_event_name
 	"OnTouch_",	//ontouch_name (runs on first visible char to enter area, picks another char if the first char leaves)
 	"OnTouch",	//ontouch2_name (run whenever a char walks into the OnTouch area)
+	"OnWhisperGlobal",	//onwhisper_event_name (is executed when a player sends a whisper message to the NPC)
 };
 
 static jmp_buf     error_jump;