GitPlugin: Don't use Popen terminate()

[Peter Suter]

Created as part of the move of GitPlugin. Tickets originally reported for ​th:GitPlugin: ​th:#9560, ​th:#9581, #9646

Replying to ​sjtoik:

popen.terminate have been introduced in python 2.6

Replying to Greg:

It seems that calling p[0].terminate() (on lines 744 and 760 of PyGIT.py) will fail with the access is denied message on Windows

[Peter Suter]

[11000] replaces subprocess.Popen.terminate() (which is only available since Python 2.6) with a quite ugly mix of win32api.TerminateProcess on Windows and os.kill() elsewhere.

I still get the access is denied errors on Windows, so I added a try: ... except: ... for that.

Any better ideas?

[Peter Suter]

[11031] fixes some Python 2.5 incompatibilities and replaces the use of pywin32 (win32api.TerminateProcess introduced in [11000] above) on Windows with ctypes, which is included with Python since 2.5. (These were also mentioned in ​th:#9560)