Managing os_log <private> logging

[aharriscrowne]

It seems that because the OSLogWriter wraps os_log, all log messages are handled as format arguments and thus when not actively debugging an app. This substantially reduce the value of release build os_log. It also makes it impossible to separate a developer's own formatted arguments from accompanying static text.

[kabouzeid]

Currently this cannot be fixed because os_log can’t be properly wrapped in Swift. This is because swift doesn’t support „argument splatting“. For a detailed explanation see: https://stackoverflow.com/a/50942917