New InitLocale implementation

[RobinD42]

Fixes #1440 and probably some others

[wossx]

import platform
print(platform.platform())
import sys
print(sys.version)
import locale
print(locale.getdefaultlocale(), locale.getlocale())
import wx
print(wx.version(), end='\n\n')

app = wx.App()

For me it causes this on Windows 7-64:

Windows-7-6.1.7601-SP1
3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:20:19) [MSC v.1925 32 bit (Intel)]
('hu_HU', 'cp1250') ('Hungarian_Hungary', '1250')
4.1.1a1.dev4845+73f75ea3 msw (phoenix) wxWidgets 3.1.4

Traceback (most recent call last):
  File "d:\env\develop\lib\site-packages\wx\core.py", line 2204, in OnPreInit
    self.InitLocale()
  File "d:\env\develop\lib\site-packages\wx\core.py", line 2271, in InitLocale
    locale.setlocale(locale.LC_ALL, lang)
  File "D:\Python38\lib\locale.py", line 608, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

And Python 3.6 :

Windows-7-6.1.7601-SP1
3.6.8 (tags/v3.6.8:3c6b436a57, Dec 23 2018, 23:31:17) [MSC v.1916 32 bit (Intel)]
('hu_HU', 'cp1250') (None, None)
4.1.1a1.dev4845+73f75ea3 msw (phoenix) wxWidgets 3.1.4

Traceback (most recent call last):
  File "d:\Python36\lib\site-packages\wx\core.py", line 2204, in OnPreInit
    self.InitLocale()
  File "d:\Python36\lib\site-packages\wx\core.py", line 2271, in InitLocale
    locale.setlocale(locale.LC_ALL, lang)
  File "d:\Python36\lib\locale.py", line 598, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

On Windows 10-64 works fine.

Windows-10-10.0.18362-SP0
3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:20:19) [MSC v.1925 32 bit (Intel)]
('hu_HU', 'cp1250') ('Hungarian_Hungary', '1250')
4.1.1a1.dev4845+73f75ea3 msw (phoenix) wxWidgets 3.1.4

[RobinD42]

I'll add locale.Error to the exception handler.

[RobinD42]

This pull request has been mentioned on Discuss wxPython. There might be relevant details there:

https://discuss.wxpython.org/t/a-few-more-windows-locale-related-remarks/34788/1