[PATCH web] building: add --with-cairo=gl to weston autogen step

[Rob Bradford]

On 13 August 2013 16:00, U. Artie Eoff <ullysses.a.eoff at intel.com> wrote:
> From: "U. Artie Eoff" <ullysses.a.eoff at intel.com>
>
> The option --with-cairo=[image|gl|glesv2] was added to Weston's
> configure and it defaults to --with-cairo=image.  Since the
> preceding instructions elude to compiling and using cairo-gl,
> Weston needs to be configured to use it.

Is cairo-gl in a mature enough state to be used by everyone? Turning
this on will disable the subsurfaces example.

Rob