Added friendly error messages to setup script.

setup.py

@@ -3,10 +3,20 @@
 import os, sys, glob, fnmatch
 
 ## Added 10 Jan 2008
-from distutils.core import setup, Extension
-import distutils.command.install_data
-from distutils.core import setup
-from DistUtilsExtra.command import *
+
+try: 
+    from distutils.core import setup, Extension
+    import distutils.command.install_data
+    from distutils.core import setup
+except:
+    print "DistUtils / SetupTools are required"
+    sys.exit(1)
+
+try:
+    from DistUtilsExtra.command import *
+except:
+    print "DistUtils Extras is required"
+    sys.exit(1)
 
 setup(name = "oblogout",
     version = "0.2",