casa-mp-base

pyobjc: consolidate framework ports

The ensures that we get _all_ the frameworks available for a given OS,
rather than just the few we used to include. To avoid breaking old, but
possibly working, ports, I only applied the change to the Python 3.x
version of PyObjC.

As an aside this effectively removes the ports providing:

* py27-pyobjc-fsevents
* py27-pyobjc-qtkit
* py27-pyobjc-quartz
* py35-pyobjc-fsevents
* py35-pyobjc-qtkit
* py35-pyobjc-quartz

However, no other ports depend on them, and the imminent EOL of
Python 2.7 means that people really shouldn't be relying on them
outside of MacPorts anyway, so I consider that acceptable.
Although Python 3.5 will remain supported for a bit longer, dropping
these extra dependencies shouldn't matter much.

To prevent breaking other ports, I altered them to depend on the
combined port, if necessary, and bumped their revision just in case
even if not.