i965: gen5 exposes EXT_texture_integer incorrectly
Currently ironlake shows support for EXT_texture_integer, however that extension says
NV_gpu_program4 or EXT_gpu_shader4 is required.
Since it only exposes GL 2.1/GLSL 1.20 currently, shouldn't EXT_texture_integer be turned off until EXT_gpu_shader4 is supported?