Add old log support to mojcore

:Release Notes:
Two projects: filecache and activitymanager is still use old log format
instead of PmLogLib. This submition allow these projects to use old log.

:Detailed Notes:
DB8 converted to PmLogLib usage,
but old log engine is kept for projects still using mojcore for logging.

:Testing Performed:
tested on local build

:QA Notes:

:Issues Addressed:
[GF-40978] mojodb log messages wrong formatting

Open-webOS-DCO-1.0-Signed-off-by: Igor Kuksyuk <igor.kuksiuk@lge.com>

Change-Id: I79e936ad8a74cfc3da7fe48a70bfebd6de1b8029
Reviewed-on: https://g2g.palm.com/4223
Reviewed-by: DCO Verification
Reviewed-by: Igor Kuksyuk <igor.kuksiuk@lge.com>
Tested-by: Igor Kuksyuk <igor.kuksiuk@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>