File-local variable fixes.

File-local variable fixes.
* lisp/files.el (local-enable-local-variables): Doc fix.
(inhibit-local-variables-regexps): Rename from inhibit-first-line-modes-regexps.
Keep old name as obsolete alias.  Doc fix.
Add some extensions from auto-coding-alist.
(inhibit-local-variables-suffixes):
Rename from inhibit-first-line-modes-suffixes.  Doc fix.
(inhibit-local-variables-p): New function, extracted from set-auto-mode-1.
(set-auto-mode): Doc fix.  Respect inhibit-local-variables-regexps.
(set-auto-mode-1): Doc fix.  Use inhibit-local-variables-p.
(hack-local-variables): Doc fix.
Make the mode-only case respect enable-local-variables and friends.
Respect inhibit-local-variables-regexps for file-locals,
but not for directory-locals.
(set-visited-file-name): Take account of inhibit-local-variables-regexps.
Whether it applies may change as the file name is changed.
* lisp/jka-cmpr-hook.el (jka-compr-install):
* lisp/jka-compr.el (jka-compr-uninstall):
Update for inhibit-first-line-modes-suffixes name change.

* etc/NEWS: Mention this change.

Fixes: debbugs:10506