Portable version of priority inheritance check (Posix API based).
drwxr-xr-x - gcc-patches
drwxr-xr-x - newlib-patches
drwxr-xr-x - rtems-build
drwxr-xr-x - rtems-omk-template
drwxr-xr-x - rtems-patches
drwxr-xr-x - rtems-tests