zip: Explicitly disable bzip2 support

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@palm.com>
Change-Id: Ib97b1ca39cc84697433f65f932b91f013ed3699c
Reviewed-on: http://g2g.palm.com/1492
Reviewed-by: Lloyd Chang <lloyd.chang@palm.com>
Reviewed-by: Build Verification
Reviewed-by: Martin Jansa <martin.jansa@palm.com>
Tested-by: Martin Jansa <martin.jansa@palm.com>
Reviewed-by: Susan Montooth <susan.montooth@palm.com>