hg: build-infra/jdk8: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: fb70650db12e
Author:    ihse
Date:      2012-06-11 17:00 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/fb70650db12e

Rename cores.m4 to build-performance.m4 to prepare for more general content
in this file.

+ common/autoconf/build-performance.m4
! common/autoconf/configure.ac
- common/autoconf/cores.m4

Changeset: dd007076ea06
Author:    ihse
Date:      2012-06-11 17:06 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/dd007076ea06

Extract logic related to improving build performance into
build-performance.m4.

! common/autoconf/build-performance.m4
! common/autoconf/configure.ac
! common/autoconf/generated-configure.sh
! common/autoconf/platform.m4