JUnitShell incorrectly computed numClients due to out-of-order execution.

We now go ahead and instantiate run styles during arg processing.

Review by: jlabanca (desk)



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@6512 8db76d5a-ed1c-0410-87a9-c151d255dfc7