ChangeLog addition:

2023-03-21  Aidan Kehoe  <kehoea@parhasard.net>

	* XEmacs.rules:
	Avoid specifying duplicate files when creating tarballs, this
	gives problems when un-archiving with non-GNU tar(1). Achieve this
	by passing the output of `sort -u $(MANIFEST)` to the tar command,
	in place of simply `cat $(MANIFEST)`.
	* .hgsubstate: Release various packages that need to be released
	to have this take effect.