updated bibutils to version 4.9

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

Formula/bibutils.rb

@@ -1,12 +1,20 @@
 require 'formula'
 
 class Bibutils <Formula
-  url 'http://www.scripps.edu/~cdputnam/software/bibutils/bibutils_4.8_osx_intel.tgz'
+  url 'http://www.scripps.edu/~cdputnam/software/bibutils/bibutils_4.9_src.tgz'
   homepage 'http://www.scripps.edu/~cdputnam/software/bibutils/'
-  md5 '11a89c76a65b2688271b1726ce4a23a7'
-  version '4.8'
+  md5 '1cc0724b821ae9749b91a267207105dc'
 
   def install
-    bin.install Dir["*"]
+    system "./configure --install-dir #{prefix}"
+    inreplace "Makefile" do |s|
+      s.change_make_var! "CC", "CC=\"#{ENV.cc}\""
+    end
+    system "make"
+
+    executables = %w{ bib2xml ris2xml end2xml endx2xml med2xml isi2xml copac2xml
+        biblatex2xml ebi2xml wordbib2xml xml2ads xml2bib xml2end xml2isi
+        xml2ris xml2wordbib modsclean }
+    executables.each { |x| bin.install "bin/#{x}" }
   end
 end