Add support for CPACK_RPM_<COMPONENT>_VERSION
It would be helpful to be able to specify the variable CPACK_RPM_<COMPONENT>_VERSION
(and most likely the CPACK_RPM_<COMPONENT>_VERSION_MAJOR
, CPACK_RPM_<COMPONENT>_VERSION_MINOR
, CPACK_RPM_<COMPONENT>_VERSION_PATCH
variables) in order to be able to generate components for which the versions are different.