core will now ignore missing natives starting with '@'

the compiler will now resolve aliased natives to single references and export '@' natives for each redundant entry

--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%40804

core/systems/PluginSys.cpp

@@ -1037,7 +1037,8 @@ bool CPluginManager::RunSecondPass(CPlugin *pPlugin, char *error, size_t maxleng
 		{
 			break;
 		}
-		if (native->status == SP_NATIVE_UNBOUND)
+		if (native->status == SP_NATIVE_UNBOUND
+			&& native->name[0] != '@')
 		{
 			if (error)
 			{