This update for libzypp, zypper, libsolv and protobuf fixes the following issues:

- Choice rules: treat orphaned packages as newest (bsc#1190465)
- Avoid calling 'su' to detect a too restrictive sudo user umask (bsc#1186602)
- Do not check of signatures and keys two times(redundant) (bsc#1190059)
- Rephrase vendor conflict message in case 2 packages are involved (bsc#1187760)
- Show key fpr from signature when signature check fails (bsc#1187224)
- Fix solver jobs for PTFs (bsc#1186503)
- Fix purge-kernels fails (bsc#1187738)
- Fix obs:// platform guessing for Leap (bsc#1187425)
- Make sure to keep states alives while transitioning. (bsc#1190199)
- Manpage: Improve description about patch updates(bsc#1187466)
- Manpage: Recommend the needs-rebooting command to test whether a system reboot is suggested.
- Fix kernel-*-livepatch removal in purge-kernels. (bsc#1190815)
- Fix crashes in logging code when shutting down (bsc#1189031)
- Do not download full files even if the checkExistsOnly flag is set. (bsc#1190712)
- Add need reboot/restart hint to XML install summary (bsc#1188435)
- Prompt: choose exact match if prompt options are not prefix free (bsc#1188156)
- Include libprotobuf-lite20 in products to enable parallel downloads. (jsc#ECO-2911, jsc#SLE-16862)