The latest RTEMS (2019/07) has restructured Leon/AMBA header files,
putting them under a grlib folder. Detect this by a combination of checks,
that depends on the fact that our custom cross build in TASTE
enables Ada (which Gaisler's RCC doesn't).

        For openaadl/ocarina#160

        For openaadl/polyorb-hi-c#31

        For openaadl/ocarina#222

        For openaadl/ocarina#161

        For openaadl/ocarina#176

        For openaadl/ocarina#175

          example by default

          termination

          For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

        For openaadl/ocarina#170

this command is not called during the build of Pohic, this is not
correct! if the asn1 compiler version change, the files must be
re-generated

        Committed on behalf of R. Defoin