1. Implement wait4 by calling __wait4 exists in libc.so 2. Add wait4 to libc.a Change-Id: I08b6555cc50ee88358cd2ec63f9d8d2d4482305a
1. Implement wait4 by calling __wait4 exists in libc.so 2. Add wait4 to libc.a Change-Id: I08b6555cc50ee88358cd2ec63f9d8d2d4482305a