ref: a6f70b42b62b71f3cb0ea3494f14cb1487c9a1f1
parent: dc9d36c0a6c749616d5543aa208864d7b0181fea
author: Johann <johannkoenig@google.com>
date: Tue Oct 27 11:38:47 EDT 2015
Only set sysroot when alt_libc finds a directory Change-Id: Idc0a9adb4fb371272d6c8c98737f66c6cf209e37