Corrected change-working-directory and check-directories-exist.
Corrected change-working-directory and check-directories-exist.

GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago,informatimago/lisp,informatimago/lisp,informatimago/lisp,informatimago/lisp,informatimago/lisp,GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago,informatimago/lisp,informatimago/lisp,GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago