Update config.guess and config.sub from
http://git.savannah.gnu.org/cgit/config.git.

Backport of r1575509 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/branches/1.5.x@1575512 13f79535-47bb-0310-9956-ffa450edef68