glsl: a shader storage buffer must be smaller than the maximum size allowed

glsl: a shader storage buffer must be smaller than the maximum size allowed

Otherwise, generate a link time error as per the
ARB_shader_storage_buffer_object spec.

v2:
- Fix error message (Jordan)

v3:
- Move std140_size() changes to its own patch (Kristian)

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>