RFR 8130302: jarsigner and keytool -providerClass needs be re-examined for modules

[Wang Weijun]

All suggestions accepted. Webrev updated at

  http://cr.openjdk.java.net/~weijun/8130302/webrev.05

> 241             throw (InvalidParameterException)
> 
> This cast should not be needed?
> 

} catch (UcryptoException ue) {
    throw (InvalidParameterException)
        new InvalidParameterException("Error using " + configArg).
            initCause(ue.getCause());
}

initCause() returns Throwable but the method's signature throws InvalidParameterException.

Thanks
Max