Replace xmessage with gxmessage

In a few scripts anyway. Problem reported by Don (don570 in forum) with xmessage displaying non-English:

https://forum.puppylinux.com/viewtopic.php?t=14323

Fixes, github:

https://github.com/bkauler/woofq/commit/41740535823659bce1fcf209db03d497b4a10c0d

https://github.com/bkauler/woofq/commit/0ae4d83221ac1d736c30a97b9a19c42ab3648b5c    

Tags: easy