hg: jdk8/build: 8023957: Lock down version of autoconf

[erik.joelsson at oracle.com]

Changeset: 92facce22941
Author:    erikj
Date:      2013-08-30 10:13 +0200
URL:       http://hg.openjdk.java.net/jdk8/build/rev/92facce22941

8023957: Lock down version of autoconf
Reviewed-by: chegar, dsamersoff, tbell, dholmes

! README-builds.html
! common/autoconf/autogen.sh
! common/autoconf/configure.ac
! common/autoconf/generated-configure.sh