[issue2177] Update compiler module to handle class decorators

[Thomas Herve]

New submission from Thomas Herve:

The attached patch (tries to?) updates compiler to handle class
decorators, and also to handle the new way decorated function are
handled. I had a weird bug because it seems that ast.py was modified at
hand last time (r51330).

This fixes the recent failures in the buildbot slaves.

Please review!

----------
components: Library (Lib)
files: compiler.diff
keywords: patch
messages: 62915
nosy: therve
severity: normal
status: open
title: Update compiler module to handle class decorators
versions: Python 2.6
Added file: http://bugs.python.org/file9538/compiler.diff

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