This implicitly tests the previous commit to
adjust how date(1) handles multiple named format options.
Currrently it tests the following are supported:
chown --quiet --silent
date --rfc-email --rfc-822 --rfc-2822
date --uct --utc --universal
dircolors --bourne-shell --sh
dircolors --csh --c-shell
head --quiet --silent
* tests/misc/option-aliases.sh: A new test to ensure all
option aliases supported by a command are supported.
* Reference the new test.