New feature: random items allow spawn not themselves, but an item from a brad selection

- specify random items in RandomItems.xml
- when the game creates a random item, it searches all vialbe items according to random item class and picks one randomly
- this allows mappers to place items in maps that are more independent of the xml-set used, however the random items themselves msut be the same in map&mod
- can also be used to broaden the enemy gun/item choices selection
- for more reference, see http://www.bears-pit.com/board/ubbthreads.php/topics/310793.html#Post310793

FIX: sector curfew value was interpreted wrong

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@5594 3b4a5df2-a311-0410-b5c6-a8a6f20db521

Init.cpp

@@ -388,6 +388,10 @@ BOOLEAN LoadExternalGameplayData(STR directoryName)
 	strcat(fileName, CLOTHESFILENAME);
 	SGP_THROW_IFFALSE(ReadInClothesStats(fileName),CLOTHESFILENAME);
 
+	strcpy(fileName, directoryName);
+	strcat(fileName, RANDOMITEMFILENAME);
+	SGP_THROW_IFFALSE(ReadInRandomItemStats(fileName),RANDOMITEMFILENAME);
+
 	strcpy(fileName, directoryName);
 	strcat(fileName, ARMOURSFILENAME);
 	SGP_THROW_IFFALSE(ReadInArmourStats(fileName),ARMOURSFILENAME);