Ok, that is added to the loading.texi patch. 

Also list-load-path-dir-locals-shadows was renamed to
list-dir-locals-shadows.  An argument PATH was added since it makes
sense to run this on other directories than load-path.  And the argument
STRINGP was added to align with list-load-path-shadows.

NEWS suggestion:

** `list-load-path-shadows' no longer reports .dir-locals.el files.  A
.dir-locals.el file may shadow another .dir-locals.el file but not in
the same sense as in `list-load-path-shadows'.  A new command
`list-dir-locals-shadows' is introduced.  It detect shadows of
.dir-locals.el files in a way that make sense for this type of files.

ChangeLog suggestion:

	* emacs-lisp/shadows.el (load-path-shadows-find): Do not report
	.dir-locals.el files. 
	(list-dir-locals-shadows): New command that reports shadows of
	.dir-locals.el in a way that make sense for that type of file. 
	(dir-locals-shadows-find, dir-locals-shadows-find-1)
	(dir-locals-class-name, dir-locals-shadows-display): Auxiliary
	functions for list-dir-locals-shadows.

Regards,

/Johan