Added mushroom defense cap to mounted and some flying units

data/core/units.cfg

@@ -643,7 +643,7 @@ The life span of the wose is unknown, although the most ancient members of this
             castle=60
             cave=80
             frozen=70
-            fungus=80
+            fungus=-80
         [/defense]
 
         [resistance]
@@ -784,7 +784,7 @@ The life span of the wose is unknown, although the most ancient members of this
         [defense]
             {FLY_DEFENSE 50}
             cave=80
-            fungus=70
+            fungus=-70
         [/defense]
         {FLY_RESISTANCE}
     [/movetype]
@@ -1642,14 +1642,14 @@ The life span of the wose is unknown, although the most ancient members of this
             swamp_water=80
             flat=60
             sand=60
-            forest=70
+            forest=-70
             hills=40
             mountains=60
             village=60
             castle=50
             cave=70
             frozen=70
-            fungus=70
+            fungus=-70
         [/defense]
         [resistance]
             blade=80