Set Build Date from changelog again #933
The old one is still needed in case
The duplication is rather small, though.
fa303d5 had moved the code that used SOURCE_DATE_EPOCH to run before we do setenv here. The old code is still needed in case SOUCE_DATE_EPOCH is set by the caller of rpmbuild. The new code is now needed for the case where we use the last changelog date via %source_date_epoch_from_changelog Y See https://reproducible-builds.org/ for why this is good. Fixes #932