* src/tracker-utils/tracker-info.c: Added command line switches to
	faciliate the _get() and _get_multiple() APIs for Metadata. Now we
	can request multiple specific metadata types for multiple files
	using tracker-info.

	* data/dbus/tracker-metadata.xml:
	* src/libtracker/tracker.[ch]: 
	* src/trackerd/tracker-metadata.[ch]: Added
	tracker_metadata_get_multiple() so we can get multiple metadata
	types for multiple files. This is quite a bit faster than
	requesting multiple metadata types for one file at a time. Fixes
	NB#108543.

svn path=/trunk/; revision=3160