This update for libsolv, libzypp, zypper, PackageKit-branding-SLE, PackageKit, libyui, yast2-pkg-bindings fixes the following issues:

- Fix the dependency for Packagekit-backend-zypp in SUMa 4.3 (bsc#1224242)
- Improve updating of installed multiversion packages
- Fix decision introspection going into an endless loop in some cases
- Split libsolv-tools into libsolv-tools-base [jsc#PED-8153]
- Improve checks against corrupt rpm
- Fixed check for outdated repo metadata as non-root user (bsc#1222086)
- Add ZYPP_API for exported functions and switch to visibility=hidden (jsc#PED-8153)
- Dynamically resolve libproxy (jsc#PED-8153)
- Fix download from gpgkey URL (bsc#1223430)
- Delay zypp lock until command options are parsed (bsc#1223766)
- Unify message format