CPackRPM: Restore old style debuginfo creation for rpm >= 4.14
There is a new behaviour for rpm >= 4.14, that builds debuginfo packages differently from previous versions of rpm. This commit disables the new behaviour in a way that does not affect previous versions of rpm.
Without this patch, the test RunCMake.CPack_RPM
fails with recent versions of rpm.
Topic-rename: CPackRPM-new-debuginfo