Improve fix for issue #247, relative path not always start with ./

Author: florentx

pep8.py

@@ -1137,7 +1137,7 @@ def normalize_paths(value, parent=os.curdir):
         return value
     paths = []
     for path in value.split(','):
-        if path.startswith('./'):
+        if '/' in path:
             path = os.path.abspath(os.path.join(parent, path))
         paths.append(path.rstrip('/'))
     return paths