Blocked revisions 75164-75166 via svnmerge

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  r75164 | senthil.kumaran | 2009-09-30 20:07:03 -0500 (Wed, 30 Sep 2009) | 3 lines

  Fix for issue7026 test_urllib: unsetting missing 'env' variable.
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  r75165 | senthil.kumaran | 2009-09-30 20:19:18 -0500 (Wed, 30 Sep 2009) | 3 lines

  using dict.unset(k) instead of del dict[k]. consistent with release26-maint
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  r75166 | senthil.kumaran | 2009-09-30 20:50:13 -0500 (Wed, 30 Sep 2009) | 3 lines

  That's self.env.unset(k) and not env.unset(k) I was heading back to the problem.
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