Merged revisions 74750 via svnmerge from

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  r74750 | lars.gustaebel | 2009-09-12 12:28:15 +0200 (Sat, 12 Sep 2009) | 9 lines

  Issue #6856: Add a filter keyword argument to TarFile.add().

  The filter argument must be a function that takes a TarInfo
  object argument, changes it and returns it again. If the
  function returns None the TarInfo object will be excluded
  from the archive.
  The exclude argument is deprecated from now on, because it
  does something similar but is not as flexible.
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