Change `org-get-tags' specifications
* lisp/org.el (org-tag-line-re): New variable.
(org-hide-archived-subtrees):
(org-get-buffer-tags): Use new function.
(org--get-local-tags): New function.
(org-get-tags): Change meaning. Now get all inherited tags. Change
signature.
* lisp/org-archive.el (org-archive-subtree):
* lisp/org-mobile.el (org-mobile-apply):
(org-mobile-edit):
* lisp/org-mouse.el (org-mouse-tag-menu):
* lisp/org-pcomplete.el (pcomplete/org-mode/tag): Apply change
* testing/lisp/test-org.el (test-org/get-tags): New test.
(test-org/tags-at): Remove test.