issue 4804:  Provide checks for the format string of strftime, and for the "mode" string of fopen on Windows.  These strings are user provided from python and so we can avoid invoking the C runtime invalid parameter handler by first checking that they are valid.

last; just doing it to be nice).

Also fix a message for an exception.

Replace ffi_call_STDCALL and ffi_call_SYSV by a ffi_call_x86 function
that cleans up the stack when FFI_SYSV is used, and does nothing for
FFI_STDCALL.

Remove libffi_msvc\win32.S, which is out of date and also unused; it
was only used for building ctypes with the MingW compiler.

package up the code for separate distribution.

failing buildbots.

related to ttk.

  protocol numbers are supplied outside the allowed 0-65536 range on bind()
  and getservbyport().