Makefile.in for PiCO QL cachegrind,
cachegrind's makefile.in with PiCO QL directives,
and trivially tapped Valgrind's configure script
(to create PiCO QL's Makefile from makefile.in)
work. Also introduced a trivial script to tap
Valgrind's configure script and cachegrind's makefile.in
with PiCO QL directives (for Valgrind 3.9.0).