Merged revisions 55184-55224 via svnmerge from

Merged revisions 55184-55224 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

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  r55186 | guido.van.rossum | 2007-05-08 10:37:51 -0700 (Tue, 08 May 2007) | 2 lines

  Don't die if /dev/tty doesn't exist; just skip that part of the test.
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  r55204 | guido.van.rossum | 2007-05-09 10:55:11 -0700 (Wed, 09 May 2007) | 3 lines

  Fix a segfault when b"" was passed to b2a_qp() -- it was using strchr()
  instead of memchr().  Please backport; the original code was clearly wrong.
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  r55221 | neal.norwitz | 2007-05-09 22:49:20 -0700 (Wed, 09 May 2007) | 1 line

  Always skip compiler and tranformer tests for now since they currently fail.
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