GitLab

	* doc-view.el (doc-view-buffer-file-name): New variable.
	(doc-view-convert-current-doc, doc-view-search)
	(doc-view-current-cache-dir, doc-view-initiate-display)
	(doc-view-mode): Use it.
	(doc-view-bookmark-make-cell): Use variable buffer-file-name
	instead of function.