[openSUSE/obs-build] 254c5e: Move expansion code into Build::Expand

3 Nov 2021

      Branch: refs/heads/master
  Home:   https://github.com/openSUSE/obs-build
  Commit: 254c5e5691601df953096cf08833bf82ecb92c63
      https://github.com/openSUSE/obs-build/commit/254c5e5691601df953096cf08833bf8...
  Author: Michael Schroeder <mls@suse.de>
  Date:   2021-11-03 (Wed, 03 Nov 2021)

  Changed paths:
    M Build.pm
    A Build/Expand.pm
    M expanddeps

  Log Message:
  -----------
  Move expansion code into Build::Expand

Also cleanup --define/--with/--without implementation.