RFR: JDK-8132942: ServerHandshaker should not throw SSLHandshakeException when CertificateStatus constructor is called with invalid arguments

[Jamil Nimeh]

Hello all, this fixes a minor issue with OCSP stapling, where we now do 
the argument checking up-front before attempting to instantiate the 
CertificateStatus handshake message object.  Also I've pulled out the 
OCSP stapling processing from within the clientHello method since it 
already was really long and placed it in its own private method.

Bug: https://bugs.openjdk.java.net/browse/JDK-8132942
Webrev: http://cr.openjdk.java.net/~jnimeh/reviews/8132942/webrev.01/

Thanks,
--Jamil