Add a test for leaking runtime scope dependencies on compile classpath

[Juuxel]

This makes MavenProjectTest fail because dependencies declared with a "runtime" scope are still put on the compile classpath when you use a mod* config on the compile classpath. I don't really know at the moment how to fix this, but this test is a good starting point IMO.

[modmuss50]

Test looks good, I think the fix for this should wait for 0.11

[Juuxel]

I believe this was fixed by #807.