forked from https://golang.org/cl/20434 - added app/internal/callfn package update. - changed hashes.go because -for some reason- the generated hashes don't match. - build_androidapp.go had to be changed to deal with openal package. Fixes golang/go#10743 Change-Id: Iaa3f55d80c5fd184338d27832dc5c90cb772bd6a Reviewed-on: https://go-review.googlesource.com/20707 Reviewed-by: David Crawshaw <crawshaw@golang.org> Reviewed-by: Elias Naur <elias.naur@gmail.com>