logger: fix UnicodeEncodeError with non-utf8 stdout in frozen envs

[glowinthedark]

Fix UnicodeEncodeError when logged output contains non-ascii characters such as e.g. Diccionario de la lengua española...

Only reproducible with files like this one when running a frozen executable binary such as builds generated with nuitka which seem to have a dumb stdout that does not support utf-8.

Example stacktrace

[INFO] Found 1 mdd files with 54164 entries
[INFO] extracting links...
[INFO] extracting links done, sizeof(linksDict)=64
[INFO] wordCount = 38521
[INFO] detectLangsFromName: langNames = ['German', 'Latin', 'Spanish']
[ERROR] Exception in Tkinter callback:
Traceback (most recent call last):
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/ui/ui_tk.py", line 182, in CallWrapper__call__
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/ui/ui_tk.py", line 1452, in convert
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1267, in convert
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1216, in convertV2
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1186, in _convertPrepare
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_info.py", line 222, in detectLangsFromName
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1539, in info
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1684, in _log
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1700, in handle
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1762, in callHandlers
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1028, in handle
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/logger.py", line 221, in emit
UnicodeEncodeError: 'ascii' codec can't encode character '\xf1' in position 105: ordinal not in range(128)
Traceback (most recent call last):
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/ui/ui_tk.py", line 182, in CallWrapper__call__
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/ui/ui_tk.py", line 1452, in convert
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1267, in convert
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1216, in convertV2
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_v2.py", line 1186, in _convertPrepare
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/glossary_info.py", line 222, in detectLangsFromName
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1539, in info
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1684, in _log
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1700, in handle
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1762, in callHandlers
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/logging/__init__.py", line 1028, in handle
  File "/Applications/PyGlossaryTK.app/Contents/MacOS/pyglossary/logger.py", line 221, in emit
UnicodeEncodeError: 'ascii' codec can't encode character '\xf1' in position 105: ordinal not in range(128)

[glowinthedark]

@ilius not quite sure why this test is failing: g_ebook_epub2_test.py — any clue?

when I open the generated epub file some pages contain errors...

[ilius]

I updated master branch.
You can rebase.