include/resolv.h does not define struct _res, and libc/inet/resolv.c
does not use this struct. res_init does nothing. the other res_*
functions are not implemented.
+scandir.c doesn't check returns on malloc and realloc.
-----------------------------------------------------------------------------
Move the unified syscall stuff to extra, or find a way to generate the
the required header file without using an intermediate binary.
+ Update: should be easy now that Erik has added bits/syscalls.h.
Add a usage message to the gcc wrapper.