Merge pull request #1323 from uberhacker/add-dfc-package

Add dfc package

packages/dfc.rb

+require 'package'
+
+class Dfc < Package
+  description 'dfc displays file system space usage using graphs and colors.'
+  homepage 'https://projects.gw-computing.net/projects/dfc'
+  version '3.1.1'
+  source_url 'https://projects.gw-computing.net/attachments/download/615/dfc-3.1.1.tar.gz'
+  source_sha256 '962466e77407dd5be715a41ffc50a54fce758a78831546f03a6bb282e8692e54'
+
+  depends_on 'cmake' => :build
+  depends_on 'gettext'
+
+  def self.build
+    system "cmake . -DPREFIX=#{CREW_PREFIX} -DCMAKE_BUILD_TYPE=RELEASE"
+  end
+
+  def self.install
+    system  "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end