hg: build-infra/jdk7: 2 new changesets

[magnus.ihse.bursie at oracle.com]

Changeset: cdcef05e6b7a
Author:    ihse
Date:      2011-10-27 15:15 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk7/rev/cdcef05e6b7a

Give advice on how to install ccache, if it is missing.

! common/config/help.m4
! configure
! configure.ac

Changeset: 9c8cedc43b56
Author:    ihse
Date:      2011-10-27 15:23 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk7/rev/9c8cedc43b56

Be more explicit if the ccache problem is a too old version instead of not
installed.

! configure
! configure.ac