Add debug guards to all debug statements

[jesseeichar]

In many of our debug logs we do things like:

Log.debug(Log.JEEVES, "message: "+Xml.getString(xml));

This can be very computationally expensive if xml is large. That is fine when in debug mode, unfortunately Xml.getString(xml) is done even when not in debug mode.

Sometime ago I added Log.isDebug(...) so a check can be made before doing an debug log. Last night I started a sweep through the code adding the guard to each debug statement.