CHANGE-709 - Refactor logging infrastructure (continuation)

CHANGE-709 - Refactor logging infrastructure (continuation from earlier changes)
- fix chicken/egg problem with log initialization
- add explicit logging messages in more places
- relocate log-delete code to logwriter
<a href='#crh-start'></a><a href='#crh-data-
I'd rather it was private for encapsulation, but then it's not testable without invoking Reflection to change properties dynamically during unit-testing.  Same with the other public vs private cases you've argued.