Blocked revisions 78372-78373 via svnmerge

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  r78372 | mark.dickinson | 2010-02-23 12:53:52 +0000 (Tue, 23 Feb 2010) | 1 line

  Make global variable overflowok into a keyword argument;  this fixes a failure when running ./python -m test.regrtest -R 3:2: test_format
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  r78373 | mark.dickinson | 2010-02-23 13:06:50 +0000 (Tue, 23 Feb 2010) | 1 line

  Fix spacing nit.  Thanks Eric Smith for the public humiliation.
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