daniel-pass: allow specifying multiple codes
daniel-pass: allow specifying multiple codes

A user may want to produce many throwaway passwords at once.  It can be
very slow to have to fork and exec a process for each invocation.  Allow
the user to specify multiple codes if the -p option is specified, and
print them all joined by newlines.

Signed-off-by: brian m. carlson <738bdd359be778fee9f0fc4e2934ad72f436ceda@crustytoothpaste.net>

bk2204/daniel-ruby,bk2204/daniel-ruby