ChangeLog addition:

2021-10-08  Aidan Kehoe  <kehoea@parhasard.net>

	* mule-trex.el (TREX-init):
	* mule-trex.el (define-regexp):
	* mule-trex.el (define-regexp*):
	* mule-trex.el (regexp-expand-definition):
	* mule-trex.el (define-word-regexp):
	* mule-trex.el (TREX-range-replace):
	Remove long obsolete old backquotes from this file, replaced
	programmatically.