hg: build-infra/jdk7: Added a better check for ccache 3.1.4 or newer and give

[fredrik.ohrstrom at oracle.com]

Changeset: 66a3432234b7
Author:    ohrstrom
Date:      2011-10-17 21:02 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk7/rev/66a3432234b7

Added a better check for ccache 3.1.4 or newer and give
a helpful hint if it is missing.

! common/config/platform.m4
! common/make/JavaCompilation.gmk
! configure
! configure.ac