Revision 459614

Update to upstream version 3.17

Details:
- bin/ntpshmmon is dependent on PPS option (see sConstruct)
- remove patch that has been upstreamed
- explicitly reference python2.7 rather than python2 (per current ports
  tree guidelines)
- use python flavors (Note: there is support for python3 in upstream.
  Reserving that change for a future update (as yet untested) )
- plist changes to reflect upstream changes: lib version bumps, added man
  page, removed a pkg-config file
- add X11 option for bin/xpgs*; update dependencies for 3.17 version of
  xgps* (needs python gi module & gtk3)

PR:		225310
Submitted by:	z7dr6ut7gs@snkmail.com