Blocked revisions 68179,68208-68209,68238,68240 via svnmerge

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  r68179 | raymond.hettinger | 2009-01-02 22:26:45 +0100 (Fri, 02 Jan 2009) | 1 line

  Issue #4615.  Document how to use itertools for de-duping.
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  r68208 | raymond.hettinger | 2009-01-03 20:02:23 +0100 (Sat, 03 Jan 2009) | 1 line

  Issue 4796: Add from_float methods to the decimal module.
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  r68209 | raymond.hettinger | 2009-01-03 20:08:10 +0100 (Sat, 03 Jan 2009) | 1 line

  Reapply r68191.
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  r68238 | georg.brandl | 2009-01-03 23:03:11 +0100 (Sat, 03 Jan 2009) | 2 lines

  Manually merge r68095,68186,68187,68188,68190 from 2.6 branch.
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  r68240 | georg.brandl | 2009-01-03 23:05:22 +0100 (Sat, 03 Jan 2009) | 2 lines

  Manually merge r67868 from 2.6 branch.
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