cleans up runtimes

code/game/gamemodes/game_mode.dm

@@ -24,6 +24,7 @@
 	var/list/datum/mind/antag_candidates = list()	// List of possible starting antags goes here
 	var/list/restricted_jobs = list()	// Jobs it doesn't make sense to be.  I.E chaplain or AI cultist
 	var/list/protected_jobs = list()	// Jobs that can't be traitors because
+	var/list/required_jobs = list()		// alternative required job groups eg list(list(cap=1),list(hos=1,sec=2)) translates to one captain OR one hos and two secmans
 	var/required_players = 0
 	var/maximum_players = -1 // -1 is no maximum, positive numbers limit the selection of a mode on overstaffed stations
 	var/required_enemies = 0

code/game/gamemodes/revolution/revolution.dm

@@ -13,6 +13,7 @@
 	antag_flag = ROLE_REV
 	false_report_weight = 10
 	restricted_jobs = list("Security Officer", "Warden", "Detective", "AI", "Cyborg","Captain", "Head of Personnel", "Head of Security", "Chief Engineer", "Research Director", "Chief Medical Officer")
+	required_jobs = list(list("Captain"=1),list("Head of Personnel"=1),list("Head of Security"=1),list("Chief Engineer"=1),list("Research Director"=1),list("Chief Medical Officer"=1)) //Any head present
 	required_players = 30
 	required_enemies = 2
 	recommended_enemies = 3