We are going to deprecate `WITH_RUNTIME` directive. The main reason
behind this change is that `WITH_STDLIB` directive better describes
its meaning, specifically it will add kotlin stdlib to test's classpath.
Prefer to have all module dependencies, including dependencies on
stdlib/reflect, declared explicitly. This allows to have tests on
situations like the one in KT-45308: three modules A<-B<-C, where C
doesn't depend on A, which was compiling correctly with the old JVM
backend before 1.5, but started to fail with JVM IR in 1.5.
Also simplify the code a bit, remove duplicated logic.
Evgeniy.Zhelenskiy