log: Prefer stdout

g_message() logs to stderr, while with debug enabled, stderr is
redirected to a file (or even /dev/null).

Use either g_info() or g_print() instead.
Signed-off-by: Olivier Fourdan <fourdan@xfce.org>

src/compositor.c

@@ -1147,7 +1147,7 @@ check_glx_renderer (ScreenInfo *screen_info)
             i++;
         if (prefer_xpresent[i])
         {
-            g_message ("Prefer XPresent with %s", glRenderer);
+            g_info ("Prefer XPresent with %s", glRenderer);
             return FALSE;
         }
     }

src/screen.c

@@ -102,8 +102,8 @@ myScreenSetWMAtom (ScreenInfo *screen_info, gboolean replace_wm)
     {
         if (!replace_wm)
         {
-            g_message ("Another Window Manager (%s) is already running on screen %s", wm_name, display_name);
-            g_message ("To replace the current window manager, try \"--replace\"");
+            g_print ("Another Window Manager (%s) is already running on screen %s\n", wm_name, display_name);
+            g_print ("To replace the current window manager, try \"--replace\"\n");
             g_free (display_name);
 
             return FALSE;