Improve startup speed of tools

The options for client utilities defaulted to running the JVM in interpreted
mode. This patch steps up the compilation level to allow simple JIT
compilation. This removes more than 1 second from starting the chimera utility
on my laptop, and more than 35 seconds from the build time of the system-test
module.

Target: trunk
Require-notes: yes
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Patch: http://rb.dcache.org/r/6693/