[m-rev.] for review: split getopt*.m's work into three phases

[Zoltan Somogyi]

On Thu, 06 Jan 2022 16:51:16 +1100 (AEDT), "Zoltan Somogyi" <zoltan.somogyi at runbox.com> wrote:

> For review by anyone.

In the absence of either a review or a promise of one,
I intend to commit this tomorrow as is, and deal with
any comments post-commit.

Zoltan.