Merged revisions 80108,80111,80114-80115 via svnmerge from

Merged revisions 80108,80111,80114-80115 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r80108 | victor.stinner | 2010-04-16 13:23:43 +0100 (Fri, 16 Apr 2010) | 4 lines

  Add CS_GNU_LIBC_VERSION and CS_GNU_LIBPTHREAD_VERSION constants for constr(),
  and disable test_execvpe_with_bad_program() of test_os if the libc uses
  linuxthreads to avoid the "unknown signal 32" bug (see issue #4970).
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  r80111 | mark.dickinson | 2010-04-16 13:47:52 +0100 (Fri, 16 Apr 2010) | 1 line

  Keep confstr entries in alphabetical order.
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  r80114 | mark.dickinson | 2010-04-16 14:45:35 +0100 (Fri, 16 Apr 2010) | 1 line

  Issue #4970:  move linuxthreads check outside the affected test, and use skipIf
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  r80115 | mark.dickinson | 2010-04-16 14:51:27 +0100 (Fri, 16 Apr 2010) | 1 line

  Don't assume that os.confstr_names exists.
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