hg: build-infra/jdk8: 3 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: eb94e9653633
Author:    ihse
Date:      2012-10-10 22:24 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/eb94e9653633

* Since repo-specific Makefiles can't be run standalone, rename them to Build<Repo>.gmk.
* Create simple Makefile in each repo that calls top-level Makefile with current repo as target.

! common/makefiles/Makefile

Changeset: 07e8ca5b4460
Author:    ihse
Date:      2012-10-10 22:35 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/07e8ca5b4460

Give more helpful message if multiple configurations are found.

! common/makefiles/MakeHelpers.gmk

Changeset: 9a0033c126d9
Author:    ihse
Date:      2012-10-10 23:02 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/9a0033c126d9

Improve comments and ordering in configure.ac, and add more output about
fundamental configure decisions.

! common/autoconf/basics.m4
! common/autoconf/configure.ac
! common/autoconf/generated-configure.sh