s4: Patch proposal for making minimal includes script work again

[tridge at samba.org]

Hi Matthias,

 > here a small patch proposal to make the useful minimal includes script 
 > work again.

it is working already, but your patch would break it.

The way you use it is like this:

  ./script/minimal_includes.pl smbd/*.c --waf --skip-system

but please use it _very_ carefully. Do not blindly use this script to
generate patches. You need to carefully consider the output and make
the right choices manually. It is a powerful tool, but must be used
with care.

Cheers, Tridge