Make clear we are building the Codemist Standard Lisp (CSL) version.
Remove parts of the PSL version that were previously not very well
maintained as they are being moved out into a separate port.
PR: 224234
Approved by: pi
This version can be built by system compilers (gcc 4.2 & clang) and
also ports gcc compilers, unlike its predecessor which would segfault
and even lock up during build.
PR: 199832, 199853
Submitted by: pfg (maintainer)
This is a powerful Computer-Algebra System written in it's own version of
LISP with quite a long history behind it.
PR: ports/186855
Submitted by: Pedro Giffuni <giffunip@tutopia.com>
