* Add a -P (Preserve) option, which saves a copy of files that you replace.

* Add a -P (Preserve) option, which saves a copy of files that you replace.
The idea for this option came from Marc Schneiders <marc@schneiders.org>

* I've been meaning to remove the code that checked for the existence of
/etc/sysconfig for a while now, since that file was last seen in 2.2.2.

* Replace the above with a check for elements of the old rc system.
Offer to move these files out of DESTDIR/etc for the user's convenience.