Buildsystem/Linux: Deprecate and remove use of FindTermcap.cmake - it was only used as a solution for older CentOS versions

Core/Genrevision: Move defines from SystemConfig.h file into into revision.h (might need a rename now?) and delete it.
This should remove the infamous "rebuild all of game plzkthx"-symptom when upgrading to newer revisions.

--HG--
branch : trunk

src/server/worldserver/Master.cpp

@@ -24,8 +24,9 @@
 
 #include <ace/Sig_Handler.h>
 
+#include "revision.h"
+
 #include "Common.h"
-#include "SystemConfig.h"
 #include "SignalHandler.h"
 #include "World.h"
 #include "WorldRunnable.h"