[rules-dev] KnowlegeAgent Tests

[Mark Proctor]

The KnowlegeAgent tests have been fragile for a while, related to "wait" 
code and file issues, particularly on windows. Something has changed 
recently and now they aren't working on the linux hudson server either.

So I'm now in the process of refactoring the tests to make them more 
robust, and they will hopefully run faster too, as I'll use call backs 
when something has finished instead of waiting for X seconds in the hope 
that something has finished.

Mark