Qrosspython-0.3.1-bp151.3.1

- Drop duplicate pkgconfig require again
- Summary improvement

- The latest cmake workaround for openSUSE Leap 42.2.
- %%cmake macro.

- libqrosspython1 does not match up with qrosspython.so file
  for openSUSE:Factory.

- Another cmake workaround.

- Added Qrosspython-cmake3.patch vs. cmake3 compatibility issue:
  https://github.com/0xd34df00d/Qross/commit/9053d214840

- src/bindings/csharp directory and other broken bingings
  were deleted to resolve bnc#861882 (licensing issue).

- Initial build.