Minor updates.

src/python/m5/config.py:
    Formatting.
src/python/m5/main.py:
    Slightly more useful output when you don't enter in a valid script file.

--HG--
extra : convert_revision : 5a71a6c94dbedeb000f83f57b0b575c2df924509

src/python/m5/config.py

@@ -666,7 +666,8 @@ class BaseProxy(object):
                 result, done = self.find(obj)
 
         if not done:
-            raise AttributeError, "Can't resolve proxy '%s' from '%s'" % \
+            raise AttributeError, \
+                  "Can't resolve proxy '%s' from '%s'" % \
                   (self.path(), base.path())
 
         if isinstance(result, BaseProxy):

src/python/m5/main.py

@@ -249,6 +249,8 @@ def main():
 
     # check to make sure we can find the listed script
     if not arguments or not os.path.isfile(arguments[0]):
+        if arguments and not os.path.isfile(arguments[0]):
+            print "Script %s not found" % arguments[0]
         usage(2)
 
     # tell C++ about output directory