[pass] [patch] use getopt to regularize options

[Brian Mattern]

I like being able to specify command line options (like -c) at the end
of the line (which is usually when I think of the fact that I need
them).

The attached patch uses getopt(1) to regularize the option list so that
lazy people like me can specify the options in any order.

I *think* this is portable, but don't have access to any systems other
than linux to test on.

Brian
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