This update for libsolv, libzypp fixes the following issues:
libsolv to 0.6.39:
fix memory leaks in SWIG generated code
fix misparsing of '&' in attributes with libxml2
try to keep packages from a cycle close togther in the
transaction order (bsc#1189622)
fix split provides not working if the update includes a
forbidden vendor change (bsc#1195485)
fix segfault on conflict resolution when using bindings
do not replace noarch problem rules with arch dependent ones
in problem reporting
fix and simplify pool_vendor2mask implementation
bump version to 0.6.39
libzypp to 16.22.4:
Hint on ptf resolver conflicts (bsc#1194848)
Fix package signature check (bsc#1184501)
Pay attention that header and payload are secured by a valid
signature and report more detailed which signature is missing.
Set ZYPP_RPM_DEBUG=1 to capture verbose rpm command output.