Clog timeit: use log verbose instead of debug

Debug will not be visible in release builds

Restore patch with catching python stdout after merge

Restored implementation with minor tweaks:
- now catching python output works for files (including not saved ones) and strings

Merge branch 'master' into soc-2020-info-editor

# Conflicts:
# source/blender/python/intern/CMakeLists.txt
# source/blender/python/intern/bpy_interface.c

Remove special logic triggering special behaviour from debug flags

Special debug logic can be triggered only from command line

Fix clog memory leak

Cleanup: redraw info editor only when needed

Introduce ND_SPACE_INFO_CLOG tag.

Auto refresh info editor when new log arrives

CLOG is a separate library so it can not directly use window manager notifications. Now it can be done by setting custom write callback.
Also remove todos and cleanup comments.

Implement log delete operator

Fix info editor: select what see

Before this change it was possible for list to update while you were selecting log. This resulted in unexpected selection shift.
It was also possible with logs, although very unlikely.

Fix last commit

InfoEditor: add log type to default log format

Cleanup: remove unused includes and format files

InfoEditor: add autoscroll

Cleanup: move function

Workaround (followup): textview: do not add padding on multiline text

Workaround: textview: do not add padding on multiline text

Merge branch 'master' into soc-2020-info-editor

Cleanup: remove unnecessary dot

Info editor: add context menu operators for adding filters

Cleanup: fix formatting