fixes for 16-bit syscalls testcases

syscalls/setgroups: moved compat_16.h to ../utils. This header will be
common for all 16-bit syscalls definitions.

Signed-off-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
6 files changed