Core/Memory: Give every emulated thread it's own TLS area.

The TLS area for thread T with id Ti is located at TLS_AREA_VADDR + (Ti - 1) * 0x200.
This allows some games like Mario Kart 7 to continue further.

src/core/core.cpp

@@ -61,10 +61,6 @@ int Init() {
     g_sys_core = new ARM_DynCom(USER32MODE);
     g_app_core = new ARM_DynCom(USER32MODE);
 
-    // TODO: Whenever TLS is implemented, this should contain
-    // the address of the 0x200-byte TLS
-    g_app_core->SetCP15Register(CP15_THREAD_URO, Memory::TLS_AREA_VADDR);
-
     LOG_DEBUG(Core, "Initialized OK");
     return 0;
 }