* src/tracker-extract/Makefile.am: Put all definitions and
	includes before CFLAGS (like everywhere else). Fix linking order.

	* src/tracker-extract/tracker-extract.c: Don't call g_strstrip()
	on NULL values, check the mime type first since it can be NULL.
	Fixes a warning that was being produced. Also added GOption
	support so users can do --help to see how to use the extractor
	from the terminal.

svn path=/trunk/; revision=2348