Log Message:
Update hylfax to 4.1.7.  Changes since 4.1.5:
    * added new edit-faxcover script
    * added various enhancements to faxsetup
    * default libtiff v3.6 compatibility
    * added NOTIFY_FAXMASTER and ENCODING parameters for FaxDispatch
    * added 2D-MMR support for Class 2 modems that support it
    * added RingTimeout, ModemRingResponse, CIDNumberAnswerLength, and
      CIDNameAnswerLength modem config parameters
    * support for MultiTech MT5634ZDXb and MT5634ZBA-DID
    * added subaddressing specification capability to sendfax
    * numerous bugfixes (several significant) and build cleanups
    * fixes the PageChop feature that broken in 4.1.6

Also fixed some cosmetic NetBSD issues with faxadmodem