* Disable csironn library since it does not build against recent qhull (libqhull_r).
* Disable ada bindings: does not build with fPIC.
* BuildRequires: python3-sip4-devel for openSUSE >= 1550 to enable pyqt5 bindings.
* Pass `-DCMAKE_SKIP_RPATH:BOOL=OFF -DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON` to cmake to fix build issues caused by Leap 15.2's incorrect cmake macros (doesn't hurt for other distros anyway).
OBS-URL: https://build.opensuse.org/request/show/851562
OBS-URL: https://build.opensuse.org/package/show/science/plplot?expand=0&rev=131