sendmail: update by Vladimir
build system: tweak for rare case where include/autoconf.h
  does not get updated

function                                             old     new   delta
packed_usage                                       26238   26242      +4
sendmail_main                                       1353     897    -456
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 4/-456)           Total: -452 bytes

4 files changed