Change cepl defpackage to be generate by a macro
Change cepl defpackage to be generate by a macro

This means no more of this crazy crap where we have to manage all the
exported symbols manually.

The advice I got from pjb was to implement the ugliness above with
'export directly. I need to understand this approach but could
be nice.

bsmr-common-lisp/cepl,djeis97/cepl,cbaggers/cepl