#### Bonus: use heirloom shell to test, if available, and if
#### TESTS_SHELL hadn't already been set.
heirloom_shell=/usr/lib/heirloom/5bin/sh
#### Bonus: use heirloom shell to test, if available, and if
#### TESTS_SHELL hadn't already been set.
heirloom_shell=/usr/lib/heirloom/5bin/sh