add mac handler

git-svn-id: svn+ssh://svn.internal.sanger.ac.uk/repos/svn/pathsoft/artemis/trunk@2686 ee4ac58c-ac51-4696-9907-e4b3aa274f04

lib/README

 
 biojava.jar - http://www.biojava.org/download14.html
+postgresql-8.0-310.jdbc2ee.jar - http://jdbc.postgresql.org/license.html
+                                 BSD License
+macos.jar - compiled version of the Mac handler class
+            uk/ac/sanger/artemis/components/MacHandler.java
+