hg: build-infra/jdk8: * Added compiler version check to gcc and Windows CL as well.

[magnus.ihse.bursie at oracle.com]

Changeset: f815c7add5fc
Author:    ihse
Date:      2012-10-09 15:52 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/f815c7add5fc

* Added compiler version check to gcc and Windows CL as well.
* Added printout in summary of detected compiler version.

! common/autoconf/generated-configure.sh
! common/autoconf/help.m4
! common/autoconf/toolchain.m4