Renamed bot_developer to botDeveloper to prevent symbol clash.

qagame*.so has a variable named this too, and this confuses the Linux
 dynamic loader since we're not using -fvisibility=hidden.

 Fixes Bugzilla #3944.

code/botlib/be_ai_goal.c

@@ -522,7 +522,7 @@ void BotInitInfoEntities(void)
 			numcampspots++;
 		} //end else if
 	} //end for
-	if (bot_developer)
+	if (botDeveloper)
 	{
 		botimport.Print(PRT_MESSAGE, "%d map locations\n", numlocations);
 		botimport.Print(PRT_MESSAGE, "%d camp spots\n", numcampspots);