Merged revisions 74817-74820,74822-74824 via svnmerge from

Merged revisions 74817-74820,74822-74824 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r74817 | georg.brandl | 2009-09-16 11:05:11 +0200 (Mi, 16 Sep 2009) | 1 line

  Make deprecation notices as visible as warnings are right now.
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  r74818 | georg.brandl | 2009-09-16 11:23:04 +0200 (Mi, 16 Sep 2009) | 1 line

  #6880: add reference to classes section in exceptions section, which comes earlier.
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  r74819 | georg.brandl | 2009-09-16 11:24:57 +0200 (Mi, 16 Sep 2009) | 1 line

  #6876: fix base class constructor invocation in example.
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  r74820 | georg.brandl | 2009-09-16 11:30:48 +0200 (Mi, 16 Sep 2009) | 1 line

  #6891: comment out dead link to Unicode article.
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  r74822 | georg.brandl | 2009-09-16 12:12:06 +0200 (Mi, 16 Sep 2009) | 1 line

  #5621: refactor description of how class/instance attributes interact on a.x=a.x+1 or augassign.
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  r74823 | georg.brandl | 2009-09-16 15:06:22 +0200 (Mi, 16 Sep 2009) | 1 line

  Remove strange trailing commas.
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  r74824 | georg.brandl | 2009-09-16 15:11:06 +0200 (Mi, 16 Sep 2009) | 1 line

  #6892: fix optparse example involving help option.
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