Added note about the support end of Samba 3 to WHATSNEW.TXT

[Jeremy Allison]

On Sun, Nov 09, 2014 at 09:39:57PM +0100, Karolin Seeger wrote:
> 
> thanks a lot for your patch, it's very much appreciated!
> I would like to add the hints for rc3. Would you like to provide an
> updated patch including the fixes? (rc3 is scheduled for Tuesday.)

Karolin, I am really trying to get the leases
code into 4.2.0 final, so unless we are planning
a rc4 can we postpone the RC3 on Tues until next
Monday, when I'm hoping that Metze and I will
have the leases patches done for the v4-2-test
branch ?

Thanks,

	Jeremy.