Update to version 3.2.1
    Drop patches accepted upstream or previously backported
    Fix glitches in the generation of the HepMC3-config script
    Add additional Python 3 version package for EPEL 7
      (cmake configuration now supports multiple Python 3 versions)
    Use new cmake configuration options -DHEPMC3_ROOTIO_INSTALL_LIBDIR and
      -DHEPMC3_BUILD_STATIC_LIBS and simplify spec file accordingly
    .egg-info filenames are now correct - auto generated provides work