Replace magic turn number 99 with FOREVER.

data/campaigns/Liberty/scenarios/08_Glory.cfg

@@ -152,7 +152,7 @@
             [/avoid]
         [/ai]
         [ai]
-            turns=7-99
+            turns=7-FOREVER
             caution=0.1
             aggression=0.9
             scout_village_targetting=1
@@ -243,7 +243,7 @@
         [/ai]
 
         [ai]
-            turns=7-99
+            turns=7-FOREVER
             aggression=0.6
             caution=0.6
             leader_value=0.5

data/campaigns/Sceptre_of_Fire/scenarios/1_A_Bargain_is_Struck.cfg

@@ -49,7 +49,7 @@
         [/ai]
 
         [ai]
-            turns=4-99
+            turns=4-FOREVER
             recruitment_pattern=fighter,archer
             aggression=0.5
             caution=0.5

data/campaigns/Sceptre_of_Fire/scenarios/8_The_Dragon.cfg

@@ -57,7 +57,7 @@
             [/target]
         [/ai]
         [ai]
-            turns=12-99
+            turns=12-FOREVER
             aggression=1.0
             caution=0.0
             village_value=0.0

data/campaigns/Son_Of_The_Black_Eye/scenarios/16_Coward.cfg

@@ -70,7 +70,7 @@
         user_team_name=_"Rebels"
         team_name=rebels
         [ai]
-            turns=5-99
+            turns=5-FOREVER
             aggression=0.25
             caution=0.5
             village_value=0.25

data/core/macros/scenario-utils.cfg

@@ -4,6 +4,11 @@
 # These macros don't depend on any others.  Please don't change this.
 # ! in comments is used in generating HTML documentation, ignore it otherwise.
 
+# Max number of turns in a scenario, mainly for use as a turn upper bound
+# in ai declarations for aggression, etc.
+#define FOREVER
+    99 #enddef
+
 #define SET_OBJECTIVES SIDE SUMMARY NOTE CONDITION_WML
     # Sets the objectives for a given player
     # Side 0 means every player. Does not affect gameplay,