[9775] Cleanups in framework library.

* Removed last bits of threading in grid code.
* Removed some weird and unneeded declarations.
* General code style fixes.
* (Perhaps some things I forgot.)

Thanks to Lynx3d for the usual GCC-stabbing...

src/framework/Policies/ObjectLifeTime.cpp

@@ -23,10 +23,10 @@ namespace MaNGOS
 {
     extern "C" void external_wrapper(void *p)
     {
-        std::atexit( (void (*)())p );
+        std::atexit((void (*)())p);
     }
 
-    void MANGOS_DLL_SPEC at_exit( void (*func)() )
+    void MANGOS_DLL_SPEC at_exit(void (*func)())
     {
         external_wrapper((void*)func);
     }