Hello!

This patch avoids "enum conversion when passing argument 1 of
‘getrusage’ is invalid in C++" warning when compiling getruntime.c.
The condition is copied from sys/resource.h.

2015-07-01  Uros Bizjak  <ubizjak@gmail.com>

    * getruntime.c (get_run_time) [__USE_GNU]: Use RUSAGE_SELF as
    argument 1 of getrusage call.

Bootstrapped on x86_64-linux-gnu.

OK for mainline?

Uros.