[openSUSE/obs-build] 4e0b80: Rework cycle handling code

8 Aug 2023

      Branch: refs/heads/master
  Home:   https://github.com/openSUSE/obs-build
  Commit: 4e0b809c6b81d22ab6ccc868de89af38cc758968
      https://github.com/openSUSE/obs-build/commit/4e0b809c6b81d22ab6ccc868de89af3...
  Author: Michael Schroeder <mls@suse.de>
  Date:   2023-08-08 (Tue, 08 Aug 2023)

  Changed paths:
    M PBuild/Checker.pm
    M PBuild/Meta.pm

  Log Message:
  -----------
  Rework cycle handling code

The key insight is the new "diffdepth" function that returns
the depth of the first different line of two meta arrays.