Support for Python 3.8

[CristiFati]

Importing any of the modules fails:

[cfati@CFATI-5510-0:C:\WINDOWS\system32]> "e:\Work\Dev\VEnvs\py_064_03.08.00_test0\Scripts\python.exe" -c "import win32api"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: DLL load failed while importing win32api: The specified module could not be found.

Details are in [GitHub]: mhammond/pywin32 - python 3.8.

Note: I consider this a quick and dirty fix, considering [Python.Bugs]: Deprecate and remove pth files.

Tested by manually replacing the .pth file on Python 3.8.0, 3.7.3, 3.6.8 and 2.7.15 VEnvs, and following the above procedure.

[CristiFati]

Could someone (higher ranked) take a look?
All tests failed, but according to failures, None because of my changes (or I might be missing something).

[CristiFati]

@mhammond: Sorry if I'm being too pushy, but it seems to be a problem with the tests, and for a while I didn't see any activity on the repo. Would it be possible for you to take a look (or delegate)?

[mhammond]

Thanks - I ended up doing the same thing via 71afa71