Code Review Request, JDK-8172869 4096 is not supported yet for the DH Parameter Generator

[Xuelei Fan]

Hi,

Please review this spec documentation update:
    http://cr.openjdk.java.net/~xuelei/8172869/webrev.00/
In the java.security.AlgorithmParameterGenerator specification, 4096 
bits DH parameter generator is specified as a required feature.

However, the 4096 bits DH parameter generator is not supported yet in 
JDK.  Although the 4096 bits DH key generation is supported, but it uses 
the predefined DH parameters.

This update removes the 4096 bits DH parameter generator requirement 
from the java.security.AlgorithmParameterGenerator specification.

Thanks,
Xuelei