upgpkg: mkinitcpio 18-2

- backport fix for FS#41468


git-svn-id: file:///srv/repos/svn-packages/svn@220998 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-any

git-svn-id: file:///srv/repos/svn-packages/svn@220999 eb2447ed-0c53-47e4-bac8-5bc4a241df78