Add ocaml package

OCaml is an industrial strength programming language supporting functional,
imperative and object-oriented styles.

Tested as working on XE500C13-K01US.

packages/ocaml.rb

+require 'package'
+
+class Ocaml < Package
+  description 'OCaml is an industrial strength programming language supporting functional, imperative and object-oriented styles'
+  homepage 'http://ocaml.org/'
+  version '4.05.0'
+  source_url 'http://caml.inria.fr/pub/distrib/ocaml-4.05/ocaml-4.05.0.tar.xz'
+  source_sha256 '04a527ba14b4d7d1b2ea7b2ae21aefecfa8d304399db94f35a96df1459e02ef9'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'buildessential' => :build
+  depends_on 'gdbm'
+
+  def self.build
+    system "./configure -prefix #{CREW_PREFIX} -libdir #{CREW_LIB_PREFIX} -no-graph"
+    system 'make -j1 world.opt'
+  end
+
+  def self.install
+    system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+  end
+end