Add miniupnpc package

miniupnpc is a lightweight upnp client library. Added as a prereq for bitcoin.

Tested as working on XE500C13-K01US.

packages/miniupnpc.rb

+require 'package'
+
+class Miniupnpc < Package
+  description 'UPnP IGD client lightweight library'
+  homepage 'http://miniupnp.free.fr/'
+  version '2.0'
+  source_url 'http://miniupnp.free.fr/files/download.php?file=miniupnpc-2.0.tar.gz'
+  source_sha256 'd434ceb8986efbe199c5ca53f90ed53eab290b1e6d0530b717eb6fa49d61f93b'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  def self.build
+    system "sed -i '139s,/usr,,' Makefile"
+    system "make", "PREFIX=#{CREW_PREFIX}", "DESTDIR=#{CREW_DEST_DIR}"
+  end
+
+  def self.install
+    system "make", "PREFIX=#{CREW_PREFIX}", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end