Merge pull request #684 from flyingP0tat0/gnupg

Add gnupg

packages/gnupg.rb

+require 'package'
+
+class Gnupg < Package
+  version '2.1.21'
+  source_url 'https://gnupg.org/ftp/gcrypt/gnupg/gnupg-2.1.21.tar.bz2'
+  source_sha1 '1852c066bc21893bc52026ead78edf50fdf15e13'
+
+  depends_on 'bz2'
+  depends_on 'automake'
+  depends_on 'libgpgerror'
+  depends_on 'libgcrypt'
+  depends_on 'libassuan'
+  depends_on 'libksba'
+  depends_on 'npth'
+
+  def self.build
+    system "./autogen.sh"
+    system "./configure"
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end