[PATCH weston] configure.ac: make use of wayland-scanner.pc

[Andrew Oakley]

On 17/02/15 15:13, Emil Velikov wrote:
> Currently we use the wayland-scanner executable as found with
> AC_PATH_PROG, and then check the presence of wayland-scanner.pc
> 
> Currently the latter is unused even if AC_PATH_PROG fails to find the
> binary. Rework things to use the pkg-config variable as a fall-back.

Reviewed-by: Andrew Oakley <aoakley at espial.com>