Fix windows log location for windows xp
Fix log file location in the windows gui
Add conor's fix to add custom tags to sql server check
Bump version to 3.9.3
Revert "Add conor's fix to add custom tags to sql server check"

This reverts commit c1e8c407d3cb8dcac87ff10ca492264300159ae0.
Allow optional custom tags in SQL Server check.
Merge 3.9.3 release into the windows branch