RFR (2nd): 8017231: Add StringJoiner.merge

[Alan Bateman]

On 03/07/2013 22:10, Henry Jen wrote:
> Yes, when I looked at it, there are other places as well. But I decided to leave those alone as for delimiter/prefix/suffix, 'supplied' seems to be fine and consistent.
>
> add() is perhaps a good change. I updated the webrev with this simple change, then I'll need a sponsor to push for me.
>
Okay, I can push this for you. There isn't a change-set linked from the 
webrev so I'll take the patch file and attribution line from the webrev.

-Alan.