[Xcb] patch Windows port

[Vincent Torri]

On Mon, 13 Dec 2010, Jeetu Golani wrote:

> Hi Vincent,
>
> I haven't applied your patch and have had just a cursory glance through it.
> Could you please explain what (again :) ) what the patch does?

it does 3 things:

  * it tells libtool that on Windows, DLL are built
  * it pass -Wl,--enable-auto-import to the linker on Windows (could be
    necessary with gcc >= 4.5, but it does not hurt anyway. See [1])
  * it installs xcb_windefs.h on Windows

Vincent

[1] http://sourceware.org/binutils/docs-2.16/ld/WIN32.html