Every now and then, I see of these programs failing with a super-long
usage message that gives no clue as to what went wrong. (Recently it
happened with a test case in ssl-opt.sh with a fairly long command line
that was entirely correct, except some options were not valid in this
config - the test should have been skipped but wasn't due to some other
bug. It took me longer to figure out than it should have, and could have
if the program had simply reported which param was not recognized.)
Also, have an explicit "help" command, separate "help_ciphersuites", and
have default usage message that's not multiple screens long.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
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