[closure-devel] dependency fix for closure.asd

Hi, In order to make closure load in sbcl when mcclim hadn't already been loaded, I needed to add two dependencies to the .asd file. Please see the attached patch. Explanation: * glisp needs sb-bsd-sockets for the implementation of glisp:open-inet-socket * glisp needs the multiprocessing functionality in the clim-sys package (possibly only necessary on openmcl and sbcl) Regards, Vincent.