hg: jdk8u/jdk8u-dev: 8027584: Disable ccache by default

[kevin.walls at oracle.com]

Changeset: 28b247535e18
Author:    kevinw
Date:      2018-03-18 15:15 -0700
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/28b247535e18

8027584: Disable ccache by default
Reviewed-by: mduigou, tbell

! common/autoconf/basics.m4
! common/autoconf/build-performance.m4
! common/autoconf/generated-configure.sh
! common/autoconf/help.m4