Use kdump.rpm also on ppc64; kernel-kdump.rpm is gone (bnc#882062).
use Report.Error
refactored array construction
version + changelog
factored out InstallPackages
KDUMP_PACKAGES in one place; simplified InstallPackages a lot
Merge pull request #19 from yast/no-kernel-kdump-rpm

Use kdump.rpm also on ppc64; kernel-kdump.rpm is gone (bnc#882062).