Restore proper output redirection.

I flipped the test of the redirection logic in commit a2b25b883, which
caused stderr output to be sent to tty instead of stdout.

kdesrc-build

@@ -4538,8 +4538,8 @@ sub log_command
         # Make sure we log everything.
         # In the case of Qt, we may have forced on progress output so let's
         # leave that interactive to keep the logs sane.
-        if($module->buildSystemType() eq 'Qt' &&
-           $module->buildSystem()->forceProgressOutput())
+        if(!($module->buildSystemType() eq 'Qt' &&
+           $module->buildSystem()->forceProgressOutput()))
         {
             open (STDERR, ">&STDOUT");
         }