Initiate new lisp-check module the same way as other language specific
ones (python-check, haskell-check).
* gnu/local.mk (GNU_SYSTEM_MODULES): Add lisp-check.scm.
* gnu/packages/lisp-check.scm (sbcl-nst, ecl-nst, cl-nst): New variables.
Signed-off-by: Guillaume Le Vaillant <glv@posteo.net>
