libscca-20210419-bp154.2.18

- Enable multipython builds. (This reenables python2 on Leap 15.)

- Update to snapshot 20210419 (048a9a44)
  * No changelog was provided
- Add system-libs.patch

- update to v0~20200717
  * worked on python bindings
  * worked on format support
  * code clean up
- remove BuildRequires:  pkgconfig
- add COPYING* to %license line

- remove python2 submodule

- update to v0~20191222
  * worked on python bindings
  * changes to support libfdata changes

- rename python-libscca to python2-libscca for consistency sake
- eliminate pyscca symbol as it in unversioned

- update to v0~20170205
  * worked on Windows 10 compressed file support
  * fixes for rpmbuild
- add GFDL-1.3 to License field
- use %make_install macro

- initial version v0~20160108