* Applied patch from Peter Maydell to uip/scansbr.c for more

  checks for write failures.
* Unlink temporary file properly in uip/rcvtty.c.
* Moved viamail from bindir to libdir.
* Changed sendfiles into sendfiles.in, so that path to viamail
  is patched in.
* Added gzip support to sendfiles.
* Added References header to replcomps and replgroupcomps.