USe config.sub from AM 1.13 for aarch64
USe config.sub from AM 1.13 for aarch64

git-svn-id: 8f35eb1495c40a702d0037cbce2e012fbbd2445f@4029 a03fbada-158d-47ef-9f12-77e997805b15

Distrotech/expat,Distrotech/expat,Distrotech/expat