Revert changes for MojLogEngine

:Release Notes:
Due to moving on PmLog was removed MojLogEngine.
But old log engine is still used by some projects for
error reporting.
This submition restore necessary classes with compatibility purpose.

:Detailed Notes:
Add early removed MojLogEngine.
It's not used within DB8, but kept for compatibility for other projects.

:Testing Performed:
tested on build

:QA Notes:

:Issues Addressed:

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

Change-Id: Idad65cd659cd82b3ca1f5052a8f6e9d28b513b99
Reviewed-on: https://g2g.palm.com/4040
Reviewed-by: DCO Verification
Reviewed-by: Igor Kuksyuk <igor.kuksiuk@lge.com>
Tested-by: Igor Kuksyuk <igor.kuksiuk@lge.com>
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>