fife-0.4.2-bp156.6.1

- Applying swig4.patch on Leap 15.6/SLE15-SP6 too
  * swig 4.1.1 has been added to SLE15-SP6

- Use %patch -P N instead of deprecated %patchN.

- Remove unneeded Requires on python3-future.

- Add upstream patch:
  * fife-boost_1_77.patch

- Add swig4.patch: Remove flags that are not supported with swig 4.

- Add _constraints file to avoid build failures

- Add missing runtime dependency to python3-futures.

- Update descriptions.

- Enable building share library again (also fixes build)
- Remove project.diff and move content into changes file

- Update to fifengine 0.4.2
  * Compatiblity with fifechan 0.1.5
  * Python bindings are now provided for Python 3
  * Joystick and Gamepad support
- Ship both, Python 3 and Python 2 bindings to not instantly break
  all downstream packages.
- Dropped installation-directories.patch which has been integrated
  upstream.
- Dropped install-rocket-header.patch which has been integrated
  upstream.
- Dropped link-cegui.patch which has been integrated
  upstream.

- Update to version 0.4.1
- Now build with cmake instead of scons
- Added patches from upstream: install-rocket-header.patch,
  installation-directories.patch and link-cegui.patch

- FIFE is incompatible with swig version 3