j3dcore: move old build file to build-old.xml

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
j3dcore: update build.xml to build against jogl release 2.0.2

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
j3dcore: update version to 1.6.0-pre8

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>