Log Rotation Improvements

Note: For 9.3

The previous implementation of managing recent logs had several issues:

• No synchronization took place between multiple processes using the same .recent_logs file. This has lead to logs being forgotten and never cleaned.
• Multiple .recent_logs files appeared depending on how tap.exe was executed, so sometimes more log files appeared.

These things has been fixed by creating a single .recent_logs file stored in user appdata(/ .config on linux). This means that different users wont clean up other users log files. Additionally a lock has been added that globally locks the .recent_logs file, and the file is read and written inside the same lock, so data races will no longer occur.

Update:

Reverted to using the same folder as the folder of OpenTap.dll. However, in case that folder is read-only, we select another place for the .opentap_recent_logfiles file.

fixes #79 (closed)