hg: build-infra/jdk8/jdk: Prevent the sjavac tool to enter the tools.jar.

[fredrik.ohrstrom at oracle.com]

Changeset: 821d9e105337
Author:    ohrstrom
Date:      2012-10-08 13:57 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/jdk/rev/821d9e105337

Prevent the sjavac tool to enter the tools.jar.

! makefiles/CompileLaunchers.gmk
! makefiles/CreateJars.gmk
! makefiles/Images.gmk