* textmodes/org-publish.el: (org-publish-expand-components):

* textmodes/org-publish.el: (org-publish-expand-components):
	Remove null projects from the list of components.
	(org-publish-attachment): Bugfix: handle the mandatory argument
	pub-dir.  Removed unused retrieval of the :publishing-directory
	property.
	(org-publish-file): Bugfix: when using a relative directory as the
	publishing directory, convert it to a directory filename.
	(org-publish-project): New alias.
	(org-publish-get-files): Protect against empty p.
	(org-publish-file): Send an error when file is not part of any
	project.
	(org-publish-file): Offer to refresh the list of files in known
	project when the current file is not part of any project.
	(org-publish-before-export-hook)
	(org-publish-after-export-hook): New hooks.
	(org-publish-org-to): Use new hooks and kill buffers.
	(org-publish-file): Remove the code for killing buffers.
	(org-publish-initialize-files-alist): Use interactive.
	(org-publish-file): If the publishing function creates a new
	buffer, kill it after publishing.
	(org-publish-timestamp-filename): Protect ":" in file name path
	under windows.