xxkb-1.11.1-bp150.2.4

- Version bump 1.11.1, properly fixes the version mismatch and repacked tarball mess

- Downgrade, because upstream fixed a version mismatch between the CHANGES file
  and the tarball name by silently repacking the tarball. More info at
  https://sourceforge.net/p/xxkb/bugs/23/
- Fixes linking issue with libXext, https://sourceforge.net/p/xxkb/bugs/16/
- Fixes PIXMAPDIR typo in Imakefile, https://sourceforge.net/p/xxkb/patches/8/

- Change Group
- Use pkgconfig in buildrequires

- Version bump: New LICENSE, Artistic 2.0

- Initial commit