#1 patch for python 2.4

A patch for vimv working with Python 2.4
Differences in Python 2.4 that caused modifications:
1. NamedTemporaryFile cannot keep file on close
2. no support of statement '_result_ if _test_ else _alternative_'
3. no 'except Exception as e' syntax support
4. no 'try-except-finally' support, only 'try-except' or 'try-finally'