* examples/extract.sh, examples/extract.awk: Make extraction work.

	* examples/Makefile (SUBDIRS): Remove packer.

	* examples/packer/pack.c, examples/packer/Makefile: Removed.

	* docs/tutorial/gtk-tut.sgml: Fix the included examples far
	enough to make them compile and (mostly) work, remove the packer
	example.