Added build check for duplicate EVR in spec file Checks changelog in spec file for entry with same EVR. Prevents running update for same epoch-version-release. Version check is already done in railsbuild-update-pkgs, but it does not prevent user running ./railsbuild-build directly on same EVR.
Added build check for duplicate EVR in spec file Checks changelog in spec file for entry with same EVR. Prevents running update for same epoch-version-release. Version check is already done in railsbuild-update-pkgs, but it does not prevent user running ./railsbuild-build directly on same EVR.

fedora-ruby/railsbuild