Added new formula for virtuoso 6.0.0.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* Bump to 6.1.1, tweak for Snow Leopard

Formula/virtuoso.rb

@@ -0,0 +1,27 @@
+require 'formula'
+
+class Virtuoso <Formula
+  url 'http://downloads.sourceforge.net/project/virtuoso/virtuoso/6.1.1/virtuoso-opensource-6.1.1.tar.gz'
+  homepage 'http://virtuoso.openlinksw.com/wiki/main/'
+  md5 '0695bffacf78e53733c27e96c9d7f9e7'
+
+  # If gawk isn't found, make fails deep into the process.
+  depends_on 'gawk'
+
+  def skip_clean? path
+    true
+  end
+
+  def caveats
+    <<-EOS.undent
+      NOTE: the Virtuoso server will start up several times on port 1111
+      during the install process.
+    EOS
+  end
+
+  def install
+    ENV.m64 if MACOS_VERSION >= 10.6 and Hardware.is_64_bit?
+    system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}"
+    system "make install"
+  end
+end