Bugfix for issue #396 - Performance issue because of PathNotFoundException

[jzarnikov]

No description provided.

[jzarnikov]

Not sure why travis-ci fails:

ERROR: JAVA_HOME is set to an invalid directory: /usr/lib/jvm/java-7-oracle

but it looks like server config issue.

[kallestenflo]

Travis config is now updated to java 8.

[apatrida]

This could actually not throw an exception at all since the configuration is known in the EvaluationContextImpl and so a null or empty list could be returned, which would then be handled in the calling layer correctly as well as it does in the catch block. Even a no stack trace version of the exception takes time. Or, if you are throwing a new stack trace version, make a static instance of the exception and do not create a new one each time.

[apatrida]

I added a patch to the other issue which should be faster performance than this item, assuming I didn't miss a case and that test coverage is good to show this doesn't break anything in the different permutations of the configuration.

#456 (comment)