cmake update needed

[Tony Kelman]

> Bill promised several time to update cmake, but it seems clear to
> me that is has no the time to take care of it.

> It will be better to officially declare the package orphan so another
> volunteer can take it.

Happy to adopt it. I have some builds of latest 3.1.1 sitting around
that I can send to the list later today. Note that I have temporarily
removed all of the patches from cygwin-ports since none of them were
necessary to build, or changed the results of any of cmake's unit tests.
I'll definitely put any of them back if I can get a reproducible test
case report, to pursue with upstream for adding new cases to their unit
tests.

-Tony