mesa/formatquery: added FILTER pname support

mesa/formatquery: added FILTER pname support

It discards out the targets and internalformats that explicitly
mention (per-spec) that doesn't support filter types other than
NEAREST or NEAREST_MIPMAP_NEAREST. Those are:

  * Texture buffers target
  * Multisample targets
  * Any integer internalformat

For the case of multisample targets, it was used the existing method
_mesa_target_allows_setting_sampler_parameter. This would scalate
better in the future if new targets appear that doesn't allow to
set sampler parameters.

We consider RENDERBUFFER to support LINEAR filters, because although
it doesn't support this filter for sampling, you can set LINEAR
on a blit operation using glBlitFramebuffer.

Reviewed-by: Dave Airlie <airlied@redhat.com>