* Added support for hook scripts in a few places around the CD
creation process, to help people customise their CDs. Quite a
lot of refactoring needed in make_disc_trees.pl needed to do that.
* Removed more cruft:
+ old defs in CONF.sh
+ old defs and rules in the Makefile
+ tools/add_secured
* Changed how the sizelimit is get by the scripts (they could have ignored
values given by the environment variable).
* Put the documentation tree from the mirror on the first CD only.