Please review CR 8048363 Implement Provider tests

[raghu k.nair]

Hi Brad,
 Could you please help me in reviewing the tests for CustomProvider and 
tests for various algorithms from the SUN and SunJCE providers.

 webrev: http://cr.openjdk.java.net/~tyan/raghu/8048363/webrev01/
 Bug Id: JDK-8048363

Thanks,
Raghu Nair