client: Ensure *print-readably* is set to NIL in CLPM subprocess

Temporary fix for #13 where ECL cannot READ BASE-STRINGs printed readably by
SBCL.
1 job for temp-fix-for-13 in 1 minute (queued for 1 second)
latest
Status Name Job ID Coverage
  Build
passed quiet #7865

00:01:00