RFR 8213400: Support choosing curve name in keytool keypair generation

[Weijun Wang]

Thanks for the extra editing. I've updated it to delivered.

--Max

> On Dec 22, 2018, at 3:51 AM, Sean Mullan <sean.mullan at oracle.com> wrote:
> 
> On 12/21/18 9:50 AM, Weijun Wang wrote:
>>> I think it is ok to use secp384r1 in the release note even though it is the default for -keysize 384.
>> OK, I'll use it. And I've just added another sentence that we recommend using -groupname.
> 
> Looks good now.
> 
> --Sean