remove obsolete upgrade from SLE9
do not support using lilo in upgrade
change way how proposing work during update in SLE-12
clean obsolete stuff that are handled by storage
change proposal to be usable also during upgrade (bnc#872081)
release
propose even in normal install
if globals exists only propose missing stuff ( fix autoyast stuff )
changes from review
Merge pull request #68 from yast/upgrade_SLE_12

Upgrade sle 12