Clean up some more config stuff.

configs/common/FSConfig.py:
    Clean up some code to make functions look less like classes.  Also put makeList function (formerly listWrapper) into m5 itself.
configs/test/fs.py:
    Update for changed code.
src/python/m5/__init__.py:
    Put makeList into m5.

--HG--
extra : convert_revision : 731806a7486f9abf986f52926126df666b024b1d

src/python/m5/__init__.py

@@ -44,6 +44,11 @@ def panic(string):
     print >>sys.stderr, 'panic:', string
     sys.exit(1)
 
+def makeList(objOrList):
+    if isinstance(objOrList, list):
+        return objOrList
+    return [objOrList]
+
 # Prepend given directory to system module search path.  We may not
 # need this anymore if we can structure our config library more like a
 # Python package.