[Lazarus] Update to README.txt

[fedorax]

Selon Malcolm Poole <malcolm at lingua-z.co.uk>:

> Hi
>
> The README.txt in the root directory of the Lazarus daily snapshot
> directs users to the old mailing list address.
>
> Malcolm
> _______________________________________________
> Lazarus mailing list
> Lazarus at lazarus.freepascal.org
> http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
>

In the file: mainunit.lfm find this:
---->
  object MyDbf: TDbf
    IndexDefs = <>
    TableLevel = 4
    UseFloatFields = True
    left = 200
    top = 616
  end
<-----
Remove the line " UseFloatFields = True ", run compiler ans that's work.