Add sbcl package. A ANSI Common Lisp compiler. (#3293)

* Add sbcl package. A ANSI Common Lisp compiler.
* Modify source_url without ?download
* Change #{CREW_DEST_DIR}#{CREW_PREFIX} to #{CREW_DEST_PREFIX}
* Remove the empty binary_url and binary_sha256 blocks.

packages/sbcl.rb

+require 'package'
+
+class Sbcl < Package
+  description 'Steel Bank Common Lisp (SBCL) is a high performance Common Lisp compiler.'
+  homepage 'http://www.sbcl.org/index.html'
+  version '1.5.3'
+  source_url 'http://prdownloads.sourceforge.net/sbcl/sbcl-1.5.3-source.tar.bz2'
+  source_sha256 'd2a7901144d227a7194661dc3ccee28873c8d5cbbd167013660c78b9ad63640c'
+
+  depends_on 'clisp' => :build
+
+  def self.build
+    system './make.sh', "--prefix=#{CREW_PREFIX}", '--xc-host=clisp --silent'
+  end
+
+  def self.install
+    system "INSTALL_ROOT=#{CREW_DEST_PREFIX} sh install.sh"
+  end
+end