This update for createrepo_c fixes the following issues:

createrepo_c:

- Does no longer perform a dir walk when --recycle-pkglist is specified
- Added automatic module metadata handling for repos
- Fixed a couple of memory leaks
- Added --arch-expand option
- Added --recycle-pkglist option
- Set global_exit_status on sigint so that .repodata are cleaned up
- Enhance error handling when locating repositories

libmodulemd:

- Just a rebuild of the package, no source changes

zchunk:

- Initial shipment of zchunk to SUSE Linux Enterprise

This update was imported from the SUSE:SLE-15-SP2:Update update project.