Release 7.0.1

[David Sugar]

I think I have all the changes needed for a 7.0.1 release in now.

I did bring in some downstream patches from Debian, and minimally fixed
support for openssl 1.1.  A lot of the rest was code cleanup and a few small
bug fixes, as well as getting rid of some obsolete build things we had
accumulated.  One can use either automake or cmake to configure.

I will give some time for any additional patches, suggested changes or build
fixes, and probably try to do a release by next weekend.