Blocked revisions 68953 via svnmerge

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  r68953 | brett.cannon | 2009-01-25 17:16:50 -0800 (Sun, 25 Jan 2009) | 3 lines

  Backport importlib in the form of providing importlib.import_module(). This has
  been done purely to help transitions from 2.7 to 3.1.
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