hg: build-infra/jdk8: Fixed check for static libcxx linking.

[erik.joelsson at oracle.com]

Changeset: c596650eef65
Author:    erikj
Date:      2012-03-30 11:51 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/c596650eef65

Fixed check for static libcxx linking.

! README-builds.html
! common/autoconf/configure
! common/autoconf/configure.ac