Patch ping

[Cesar Philippidis]

The following patches still need to be reviewed:

* Change an LTO wrapper assert failure to an error when it detects
  missing symbols. This situation can arise in offloading code, e.g.
  when the user forgets to declare a global variable as offloadable.

  https://gcc.gnu.org/ml/gcc-patches/2016-07/msg00043.html

* Add support for OpenACC routine clauses in fortran modules. Also,
  allow the routine directive to be applied to intrinsic procedures.

  https://gcc.gnu.org/ml/gcc-patches/2016-07/msg00063.html

Thanks,
Cesar