ConfParserTest: Add test case

If we have a section MakeFiles and a makefiles section we want them to
be merged to the first of those. So the user can input values for
sections case insensitively while we don't throw away his casing.

coalib/tests/parsing/ConfParserTest.py

@@ -24,6 +24,7 @@ class ConfParserTestCase(unittest.TestCase):
     ; just a omment
     nokey. = value
     default.test = content
+    makefiles.lastone = val
     """
 
     def setUp(self):
@@ -59,6 +60,7 @@ def test_parse(self):
             ('another', 'a\nmultiline\nvalue'),
             ('comment1', '; just a omment'),
             ('comment2', '; just a omment'),
+            ('lastone', 'val'),
             ('comment3', ''),
             ('a_default', 'val'),
             ('comment0', '# do you know that thats a comment'),