Allow setting of security properties via -S option on the command line

It should be possible for users to set Security Properties via command line option -S
http://docs.oracle.com/javase/6/docs/api/java/security/Security.html#setProperty%28java.lang.String,%20java.lang.String%29

Previously it was part of Security subsystem configuration, but Jason thinks it is better to place it as a cmd line option.