Merged revisions 74312 via svnmerge from

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  r74312 | mark.dickinson | 2009-08-04 22:56:04 +0100 (Tue, 04 Aug 2009) | 4 lines

  Issue #6620: Slightly safer code for _grouping_intervals in the locale
  module.  Fixes a 'possible use before assignment' warning from pylint.
  Thanks Vincent Legoll.
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