hg: build-infra/jdk8: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: 55b80b9a970f
Author:    ihse
Date:      2012-10-23 14:33 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/55b80b9a970f

Pipe `which foo` stderr to /dev/null to avoid output when foo is not found.

! common/autoconf/autogen.sh
! common/autoconf/configure

Changeset: 93e62576f9eb
Author:    ihse
Date:      2012-10-23 14:35 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/93e62576f9eb

* Add check to configure that we're using cygwin 1.7.
* Make configure output more consistent, logical and clear.
* Add comments to configure scripts.

! common/autoconf/basics.m4
! common/autoconf/basics_windows.m4
! common/autoconf/configure.ac
! common/autoconf/generated-configure.sh
! common/autoconf/jdk-options.m4
! common/autoconf/platform.m4
! common/autoconf/toolchain.m4
! common/autoconf/toolchain_windows.m4