[interfacekit] unit tests

I wrote some tests for BWidthBuffer lately, and I wanted to write more tests 
for BRegion too,
though I noticed that, if I run any interface kit test, I get the "be_roster is 
not valid, is the registrar running?" message.

This obviously happens because we're linking those tests again our BApplication.
Compiling the tests with the RUN_WITHOUT_REGISTRAR define doesn't work, as the 
tests doesn't print anything at all.

Is there a simple way to run the IK tests using R5 BApplication, BLooper, etc ?

Other related posts: