hg: jdk10/sandbox: Fixed review comments

[erik.joelsson at oracle.com]

Changeset: e3b136f21be4
Author:    erikj
Date:      2017-03-08 15:15 +0100
URL:       http://hg.openjdk.java.net/jdk10/sandbox/rev/e3b136f21be4

Fixed review comments

! common/autoconf/generated-configure.sh
! common/autoconf/spec.gmk.in
! common/autoconf/toolchain.m4