zeromq installs libraries that conflict with packages

[superm1@…]

The zeromq install is installing these files:

usr/lib/libzmq.a 
usr/lib/libzmq.so.1 
usr/lib/libzmq.la 
usr/lib/libzmq.so.1.0.1 
usr/lib/libzmq.so 
usr/lib/pkgconfig/libzmq.pc 
usr/include/zmq_utils.h 
usr/include/zmq.h 
usr/include/nzmqt.hpp 
usr/include/zmq.hpp

I'm not sure why the header files need to be installed in the first place, but the libaries clash with packages libraries. Since they're myth specific should be re-named to a myth specific name.

[superm1@…]

This is partially fixed by Beirdo's commits yesterday it appears. Zmq now is libmythzmq (yay), but I believe the headers are still installing.

[Gavin Hurlbut <ghurlbut@…>]

In b6d65fcce17031cb729b6f68c1edabcfd5f11670/mythtv:

Move external libs installed includes under $PREFIX/include/mythtv

Also removed the useless libmythqjson.prl file

Fixes #10859. Fixes #10860. Fixes #10861.

[superm1@…]

I think this is mostly fixed, but just want to double confirm these three should still be getting installed into the -dev package of a packaged build:

usr/lib/pkgconfig/libmythzmq.pc
usr/lib/libmythzmq.la
usr/lib/libmythzmq.a