Acting on EXE_SHELL was a bit over the top, especially in light of
instructions like this (from NOTES.VALGRIND):
EXE_SHELL="`/bin/pwd`/util/wrap.pl valgrind --error-exitcode=1 --leak-check=full -q"
Fixes#11255
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11258)