upgpkg: libarchive 3.1.2-6

backport patch for improved mtree support

git-svn-id: file:///srv/repos/svn-packages/svn@206597 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-i686, testing-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@206598 eb2447ed-0c53-47e4-bac8-5bc4a241df78