Move admin natives from core to logic (bug 4406 part 2, r=ds).

--HG--
rename : core/smn_admin.cpp => core/logic/smn_admin.cpp

core/logic/common_logic.cpp

@@ -54,6 +54,7 @@ IForwardManager *forwardsys;
 ITimerSystem *timersys;
 ServerGlobals serverGlobals;
 IPlayerManager *playerhelpers;
+IAdminSystem *adminsys;
 
 static sm_logic_t logic =
 {
@@ -83,6 +84,7 @@ static void logic_init(const sm_core_t* core, sm_logic_t* _logic)
 	forwardsys = core->forwardsys;
 	timersys = core->timersys;
 	playerhelpers = core->playerhelpers;
+	adminsys = core->adminsys;
 }
 
 PLATFORM_EXTERN_C ITextParsers *get_textparsers()