[openSUSE/obs-build] c6a10e: Be more user friendly

Branch: refs/heads/master Home: https://github.com/openSUSE/obs-build Commit: c6a10e469011446e727d1107372082b95c07727a https://github.com/openSUSE/obs-build/commit/c6a10e469011446e727d1107372082b... Author: Michael Schroeder Date: 2021-02-26 (Fri, 26 Feb 2021) Changed paths: M PBuild/Options.pm M PBuild/Preset.pm M pbuild Log Message: ----------- Be more user friendly Add an option to list presets, improve the usage message.