* module/oop/goops.scm, module/oop/goops/active-slot.scm,
module/oop/goops/composite-slot.scm, module/oop/goops/describe.scm:
Add a copyright line for Érick Gallesio. Mention the STk version
GOOPS was derived from. Remove mentions of the ‘COPYRIGHTS’ file.
Thanks to Karl Berry <karl@freefriends.org> for pointing it out, and
to Michael Djurfeldt <mikael@djurfeldt.com>.
Moved ice-9/ and oop/ under module/, with the idea being that we have
only scheme under module/. Adjusted configure.in and Makefile.am
appropriately. Put oop/ at the end of the compilation order.