Always use fork mode for the groovyc task in the Gant build, remove the option not to.
Always use fork mode for the groovyc task in the Gant build, remove the option not to.

git-svn-id: 09612c73960e3111da5f49d785ce6caca2747963@10229 d02f77da-47a5-474d-b610-f18e4bea325a

codehaus/gant,Gant/Gant,codehaus/gant,russel/Gant,codehaus/gant,russel/Gant,russel/Gant,Gant/Gant,Gant/Gant