Notepad++ 5.8.5

- Fix Shell Extension icon absent issue.
- Fix the crash problem if config.xml is not present.
- Fix tab settings not saved under Windows 7 problem.
- Fix localization switching under Windows 7 problem.
- Fix x64 system files problems : not included in recent file history list while closing a file.
- Fix x64 system files problems : not remembered in the next session problem.
- Fix the search direction not being memorized problem.
- Modify File Association dialog UI.
- Fix the initial document encoding is not set by "New Document Settings".