RFR [13] 8225426: Replace plain with system-default in Socket and ServerSocket

[Alan Bateman]

On 07/06/2019 15:16, Chris Hegarty wrote:
> :
>
>
> “socket implementation factory” is better. Updated:
Looks good, many inconsistencies resolved. For the CSR then the only 
real change is the no-arg Socket constructor to specify existing 
behavior, everything else is below the radar.

-Alan