Updated package to latest version, 3.6.6. Changes include:

* Netplex_container: emits now backtraces if these are enabled.
* Http_fs: adding [last_response_status] method
* Rpc_client: fixing a potential endless loop when session IDs
  are reused
* Rpc_client: fixing the shutdown when a TCP connection is
  immediately refused, and GSS-API authentication is active.
* Netcgi_fcgi.run: no longer ignoring the sockaddr argument
  (problem reported by Watanabe Masaki)
* Remove duplicate method Netpop.stat
Updated net/ocamlnet to 3.6.6
Revert bdftopcf -> ${TOOLS_PATH.bdftopcf} changes.  Actually closes PR/47883.
Assuming no response for three weeks from vocal members means no objection.
Update xnp2 to 0.83pl20130727.

pkgsrc changes:
- update HOMEPAGE and MASTER_SITES

Upstream changes:

Changes from 20130726:
 X11 dependent part:
  - fix build failure with GTK+ <2.18

Changes from 20120618:
 X11 dependent part:
  - assign F11 key to switch fullscreen and print menu during fullscreen
Updated emulators/xnp2 to 0.83pl20130727