Gtnportal 3510.2

GTNPORTAL-3510 Possible memory leaks, consistency issues and concurrency issues in ScriptGraph
Funny that this keep catching my eyes. I thought it was JBoss Logger, which didn't (or still doesn't) have a `Object... args`, but it seems that it's `ExoLogger`, which have this option. So, the logging can be changed from string concatenation to this:

`log.debug("message {}", en);`

This way, you wouldn't need to wrap it on an `if (log.isDebugEnabled())`, as the underlying logging facility would do a similar thing.