Streamline Qt5 detection on macOS

This consists of a few things:
- Remove the detection and usage of ALTERNATIVE_QT_INCLUDE_DIR in
  setup.py, because CMake takes care of finding the correct Qt
  include headers.
- Add detection of framework / non-framework includes in the CMake
  rules, instead of in the setup.py script.
- Don't pass QT_QMAKE_EXECUTABLE from setup.py to CMake, because
  it is not being used. It was previously used for detecting Qt4
  via the CMake FindQt4.cmake file. Now it is done by
  find_package() which detects qmake from the environment.
- Get rid of the old "/Library/Frameworks" QT_INCLUDE_DIR, which
  was where the official Qt 4.8.x packages installed Qt.
- Deprecate usage of ALTERNATIVE_QT_INCLUDE_DIR. Now it is only
  used if CMake fails to detect the proper include headers of Qt5
  (which should not happen).

Change-Id: I829b92bc0d40ae7eb418be27c735fc095e557820
Reviewed-by: Christian Tismer <tismer@stackless.com>

0 files changed, 0 insertions, 0 deletions