On FreeBSD, perl isn't in /usr/bin, its in /usr/local/bin or
elsewhere in the path.
Like storage/{maria/unittest/,}ma_test_* , we use /usr/bin/env to
find perl and run it.
for general use.
mysql-test/Makefile.am:
Adding directories of additional test suites
mysql-test/mysql-stress-test.pl:
Adding check for additional errors checking during test run