Merged revisions 79994 via svnmerge from

Merged revisions 79994 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r79994 | r.david.murray | 2010-04-12 10:26:06 -0400 (Mon, 12 Apr 2010) | 9 lines

  Issue #7472: ISO-2022 charsets now consistently use 7bit CTE.

  Fixed a typo in the email.encoders module so that messages output using
  an ISO-2022 character set will use a content-transfer-encoding of
  7bit consistently.  Previously if the input data had any eight bit
  characters the output data would get marked as 8bit even though it
  was actually 7bit.
........