gimp_message. libgimp also overrides g_message for all plugins. Converted

* redid the error message handling. g_message now calls message_box or prints
to console depending on whether the no_interface is set or not. gimp-message
is also exported to the PDB as a wrapper to g_message, and libgimp has a new
API: gimp_message. libgimp also overrides g_message for all plugins. Converted
lots of messages in app/* to g_message. Made script-fu a little friendlier.

* updated the regex code from grep 2.2

* said goodbye to the old script-fu logo in script-fu.h

-Yosh

plug-ins/script-fu/script-fu-interface.c

@@ -223,7 +223,7 @@ script_fu_find_scripts ()
 	      dir = opendir (path);
 
 	      if (!dir)
-		g_warning("error reading script directory \"%s\"", path);
+		  g_message ("error reading script directory \"%s\"", path);
 	      else
 		{
 		  while ((dir_ent = readdir (dir)))
@@ -726,7 +726,10 @@ static void
 script_fu_disable_cc (gint err_msg)
 {
   if (err_msg)
-    g_warning ("%s", siod_err_msg);
+    g_message ("Script-Fu Error\n%s\n"
+              "If this happens while running a logo script,\n"
+              "you might not have the font it wants installed on your system",
+              siod_err_msg);
 
   current_command_enabled = FALSE;