The Software Update Stack was updated to include fixes and enhancements.

libsolv:

- Export solvable_matchesdep function, as we now use it in the bindings. (bsc#1025440)
- New SOLVER_FLAG_STRONG_RECOMMENDS and SOLVER_FLAG_INSTALL_ALSO_UPDATES flags.
- New matchesdep() method in bindings.
- SOLVABLE_NAME selects nevr matching for pool_whatmatchesdep and solvable_matchesdep.
- Make solver_problemruleinfo2str return reason why a package is not installable.

libzypp:

- Support multi-volume repomd repositories. (fate#320544)
- Parse ZYPP_MEDIA_CURL_IPRESOLVE=4|6 to force name resolution to IPv4/IPv6 only.
- Fix X-libcurl-Empty-Header-Workaround. (bsc#1030919, bsc#1030827)
- Treat HTTP response 410 (Gone) like 404 (Not Found). (bsc#1030136)
- Create temporary directories inside ZYpp::tmpPath. (bsc#926844)
- Don't create AnonymousUniqueId in chroot. (bsc#1024741)
- Properly escape XML node content. (bsc#1024909)
- Trigger aliveCallback when downloading metalink files. (bsc#1021291)
- Fix mountpoint creation after failing UDF mount. (bsc#1022046)
- Prefer calling "repo2solv" rather than "repo2solv.sh".

zypper:

- Don't show installed system packages if list command is restricted to repos. (bsc#1028492)
- Indicate presence of additional prompt options not mentioned in the prompt string.
- Make temporary repos invisible for other zypp instances. (bsc#1017267)
- Remove non-working email addresses from author section in man page. (bsc#1028003)
- Try to exit gracefully after SIGPIPE. (bsc#926844)
- Add -y command option to 'dup' as alias for --non-interactive global option to be
consistent with other install commands. (bsc#1018873)
- Improve package info. Show binary packages built from a source package and for
packages the source package it was built from. If no specific type is requested
and no package matches, show non-package matches if available. (fate#321104)
- Fix invalid XML in GPG key info output. (bsc#1024909)
- Fix --help output breaking tab completion. (bsc#983021)

This update was imported from the SUSE:SLE-12-SP2:Update update project.