Be more explicit about classpath.  In preparation for setting:

  includeantruntime="false"

in hy.javac task in common_resources/make/properties.xml.

It would be helpful is someone using eclipse could test this as these
variables apparently aren't always set by IDEs.


git-svn-id: https://svn.apache.org/repos/asf/harmony/enhanced/jdktools/trunk@925933 13f79535-47bb-0310-9956-ffa450edef68