Update PKG_SOURCE_URL for OpenSSH

Remove broken mirrors, prefer HTTP over FTP.
Add ISC/BSD to PKG_LICENSE_*
knot: update to 1.5.1.

Signed-off-by: Daniel Salzman <daniel.salzman@nic.cz>
ruby: Fix build dependency of gmp/host

libgmp.so is needed for miniruby, that is compiled in host.
Using PKG_BUILD_DEPENDS=gmp/host eventually compiled gmp/host
before ruby/host. However, when this did not happened, build
failed. Using HOST_BUILD_DEPENDS=gmp/host seems to be the
correct way to require it.

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
libarchive: add new package

Multi-format archive and compression library

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
dtndht: add new package

DTN-DHT is a library providing a fully distributed Bittorrent DHT based
naming service especially for DTN Bundle Protocol EIDs (RFC 5050). It can
be used for all IP (v4/v6) based networks.

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
ibrcommon: add new package

The ibrcommon is a C++ abstraction library for several platforms (linux,
win32, osx, ...) and is development together with IBR-DTN an implementation
of DTN stack following the Bundle Protocol RFC 5050.

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
ibrdtn: add new package

The ibrdtn is a C++ library for DTN related objects to process bundle data and
talk to the DTN daemon of IBR-DTN. It is development together with IBR-DTN an
implementation of DTN stack following the Bundle Protocol RFC 5050.

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
ibrdtnd: add new package

This package contains the daemon (dtnd) of IBR-DTN, a modular and lightweight
implementation of the bundle protocol (RFC 5050). https://github.com/ibrdtn/ibrdtn

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
ibrdtn-tools: add new package

This package contains the tools (dtnsend, dtnrecv, dtnping, ...) of IBR-DTN, a modular
and lightweight implementation of the bundle protocol (RFC 5050).
https://github.com/ibrdtn/ibrdtn

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>
Merge pull request #220 from salzmdan/master

knot: update to 1.5.1.
Merge pull request #221 from ejonny/master

Add packages for Delay and Disruption Tolerant Networking
Merge pull request #174 from brynet/patch-1

net/openssh: Update PKG_SOURCE_URL