[Patch #462258] On Cygwin, don't build Tkinter unless the X header files     can be found.
[Patch #462258] On Cygwin, don't build Tkinter unless the X header files
    can be found.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator