document new arguments to the submit cmdline client

There are new options available to users when using the submit client. These should be added to the currently existing section in the documentation where cmdline args are described.

Here's the new stuff:

Submit [-p port] [-h hostname] [-v]
Submit [-p port] [-h hostname] [-c]
Submit [-p port] [-h hostname] [-y] [name=value. . .]

-v prints the version of the byteman agent and this client
-c prints the jars that have been added to the system and boot classloaders
-y with name/value pairs means set system properties
with no name/value pairs means list system properties

For -y, if you specify "=" without a value, you are infering that you want to delete the system property. e.g.:

submit.sh -y org.jboss.byteman.debug=

Tells the Byteman agent that it should remove the debug config system property.