Revision 420065

net/libzmq4: Update to 4.1.5, Add MANPAGES option

- Update PORTVERSION and distinfo checksum (4.1.5)
- Update pkg-plist accordingly (library minor version bump)
- Update MASTER_SITES (upstream moved to GitHub releases)
- Add MANPAGES option and dependencies (xmlto/asciidoc (sorry!) as they
  now need to be built. Add OPTIONS_SUB and update pkg-plist accordingly
- Re-patch configure after minor updates since 4.1.4
- Sort pkg-plist

PR:		211306 (part two of two)
Submitted by:	Eric Camachat <eric camachat org>