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.
- Rework susetags multi-line handling. (bsc#1007273)
- Improve checks against corrupt rpm packages.
- Add SOLVER_FLAG_FOCUS_BEST solver flag.

libzypp:

- 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)
- Properly escape XML node content. (bsc#1024909)
- Don't raise FileCheckException if user accepted a package with wrong digest. (bsc#1014265)

zypper:

- Share TmpDir with libzypp. (bsc#926844)
- Don't show installed system packages if list command is restricted to repos. (bsc#1028492)
- Fix invalid XML in GPG key info output. (bsc#1024909)
- Do not warn about processes using deleted files when using --root. (bsc#731333)
- Properly escape patch script output in xml mode. (bsc#1010712)

This update was imported from the SUSE:SLE-12-SP1:Update update project.