Initializes multiprocessing before use.
initialize-multiprocessing => nil
function is applied to the each of the entries in
to create the initial processes.
It is not necessary to call this function when the Common LispWorks GUI is running (that is, after
has been called), as this automatically starts up multiprocessing.
Note: On Windows, Linux and Mac OS, the Common LispWorks GUI starts up by default.
LispWorks Reference Manual - 25 Jul 2003