TODO is old and outdated
zypp: return package list ordered witht respect to solver policies.
zypp: check for best architecture and version when looking for the 'newest' package

Just a hotfix. Actually PK should also follow solver policies like
repo priority, keep vendor and architecture of installed packages, etc.
zypp: always solve dependencies with 'IgnoreAlreadyRecommended ON' (bnc#747751)
initial port of zypp backend
make more backends jobs
some commenting out code that is not easy to port
get_zypp only needs a job
more porting
some more
simplify priv usage
change the way get_zypp is used
pass the job correctly around
simulate readded
update_system is gone
refresh cache needs zypp too
just send the raw urls
trying to support download only
we don't need the lock
remove debug output