
Moved the RUN-PROGRAM fork/exec stuff into C, for ease in porting.

Fix initialization of print-representation attribute so that characters
>127 don't cause text to mysteriously disappear.

Flush carefully-add-font-path call.  If people want library:fonts/ in their
font-path, they can put it there.

Add :CLX-ANSI-COMMON-LISP feature.

