Lost portupgrade functionality building INDEX

[Jim Trigg]

While I understand the reasoning behind making portsdb -U use "make
index" behind the scenes, it kills a bit of functionality.  portsdb -U
no longer honors pkgtools.conf, so options set there will not be
reflected in the dependencies shown in INDEX.  If I knew ruby, I'd try
to write a new portsdb -U function, but I don't.  Is there any way we
can get this functionality back while maintaining compatibility with
make index in other ways?

Thanks,
Jim
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