Some curl versions lack curl_easy_duphandle()

Some curl versions lack curl_easy_duphandle()

Hi,

On Fri, 14 Oct 2005, Junio C Hamano wrote:

> Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
>
> > This patch looks bigger than it really is: The code to get the
> > default handle was refactored into a function, and is called
> > instead of curl_easy_duphandle() if that does not exist.
>
> I'd like to take Nick's config file patch first, which
> unfortunately interferes with your patch.  I'd hate to ask you
> this, but could you rebase it on top of Nick's patch, [...]

No need to hate it. Here comes the rebased patch, and this time, I
actually tested it a bit.

Signed-off-by: Junio C Hamano <junkio@cox.net>