Adding a formula for SML of New Jersey.

Formula/smlnj.rb

@@ -0,0 +1,44 @@
+require 'formula'
+
+class Smlnj <Formula
+  url 'http://smlnj.cs.uchicago.edu/dist/working/110.72/config.tgz'
+  homepage 'http://www.smlnj.org/'
+  md5 '97503a4e749a5e72ff975f3883688105'
+  version '110.72'
+
+  def install
+    ENV.deparallelize
+    # smlnj is much easier to build if we do so in the directory where it
+    # will be installed.  Thus, we're moving it to the prefix to be built
+    # there.
+    Dir.chdir '..'
+    prefix.install 'config'
+    Dir.chdir prefix
+    File::open('config/targets', 'w') do |f|
+      f << targets
+    end
+    system 'config/install.sh'
+  end
+
+  def targets
+<<-EOS
+request ml-ulex
+request ml-ulex-mllex-tool
+request ml-lex
+request ml-lex-lex-ext
+request ml-yacc
+request ml-yacc-grm-ext
+request ml-antlr
+request ml-lpt-lib
+request ml-burg
+request smlnj-lib
+request tdp-util
+request cml
+request cml-lib
+request mlrisc
+request ckit
+request heap2asm
+
+EOS
+  end
+end