Skip test for #19878 on Windows.
Issue #19572: More silently skipped tests explicitly skipped.
Issue #19928: Fix test on Windows
Issue #19572: Replace a return that shouldn't have been removed from test_os.
This should fix the test_os failure on the AMD64 Windows 7 buildbot.
Issue #18270: Prevent possible IDLE AttributeError on OS X when no initial
shell window is present. (Original patch by Terry Reedy)
Fixes Issue #17200: telnetlib's read_until and expect timeout was broken by the
fix to Issue #14635 in Python 2.7.4 to be interpreted as milliseconds
instead of seconds when the platform supports select.poll (ie: everywhere).
It is now treated as seconds once again.