Megatest

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1.	Config file includes are done relative to the location of the first config file

If foo/bar.config contains:
[include configs/nada.config] 

and configs/nada.config contains:
[include blah/fuz.config]

Then fuz.config would need to be at foo/blah/fuz.config

2.	Config file includes are done relative to the location of the currently being processed config

In the example above fuz.config would be found at foo/configs/blah/fuz.config

3.	Config file includes are required to be absolute e.g.

#{getenv MT_RUN_AREA_HOME}/foo/configs/blah/fuz.config

Which policy do you want going forward? I'll ensure we adhere to whatever we choose from here on out. My current test suite assumes policy #3 but I'm fine with supporting either #1 or #2.
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