add securityLevel InstallHints to RegisterDeploy API on windows
this is required for https://jbs.oracle.com/bugs/browse/JDK-8001019
Tested with 7u10 b17:
javaw.exe -cp ..\\lib\\deploy.jar com.sun.deploy.panel.ControlPanel -setSecurityLevel X.
Tried all valid vaies 0 - 4, also invalid ones. No issues.
Helper task to JDK-8001019 which is a subtask of JDK-8000191 "New security settings"
JDK-8000191 "New security settings" is a new feature, test development is tracked separately in