mesa/formatquery: Added compressed texture related queries

mesa/formatquery: Added compressed texture related queries

From the ARB_internalformat_query2 specification:

   "- TEXTURE_COMPRESSED: If <internalformat> is a compressed format
      that is supported for this type of resource, TRUE is returned in
      <params>. If the internal format is not compressed, or the type of
      resource is not supported, FALSE is returned.

    - TEXTURE_COMPRESSED_BLOCK_WIDTH: If the resource contains a compressed
      format, the width of a compressed block (in bytes) is returned in
      <params>. If the internal format is not compressed, or the resource
      is not supported, 0 is returned.

    - TEXTURE_COMPRESSED_BLOCK_HEIGHT: If the resource contains a compressed
      format, the height of a compressed block (in bytes) is returned in
      <params>. If the internal format is not compressed, or the resource
      is not supported, 0 is returned.

    - TEXTURE_COMPRESSED_BLOCK_SIZE: If the resource contains a compressed
      format the number of bytes per block is returned in <params>.  If the
      internal format is not compressed, or the resource is not supported,
      0 is returned.
      (combined with the above, allows the bitrate to be computed, and may be
      useful in conjunction with ARB_compressed_texture_pixel_storage)."

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