Bump campaign version to 8.0 for latest DCS.

Building IDs changed again. Ack the change in my two campaigns which
don't use these target types.

(cherry picked from commit edbd3de4a4f8d62adeb98880f97e012d2bab75a8)

game/version.py

@@ -106,4 +106,8 @@ VERSION = _build_version_string()
 #:
 #: Version 7.1
 #: * Support for Mariana Islands terrain
-CAMPAIGN_FORMAT_VERSION = (7, 1)
+#:
+#: Version 8.0
+#: * DCS 2.7.4.9632 changed scenery target IDs. Any mission using map buildings as
+#:   strike targets must check and potentially recreate all those objectives.
+CAMPAIGN_FORMAT_VERSION = (8, 0)

resources/campaigns/battle_of_abu_dhabi.json

@@ -7,5 +7,5 @@
   "description": "<p>You have managed to establish a foothold at Khasab. Continue pushing south.</p>",
   "miz": "battle_of_abu_dhabi.miz",
   "performance": 2,
-  "version": "7.0"
+  "version": "8.0"
 }

resources/campaigns/black_sea.json

@@ -5,5 +5,5 @@
   "description": "<p>A medium sized theater with bases along the coast of the Black Sea.</p>",
   "miz": "black_sea.miz",
   "performance": 2,
-  "version": "7.0"
+  "version": "8.0"
 }