- drop 'kotlin-runtime' and other dependencies which are exported by
other modules ('util' and 'util.runtime' in case of 'kotlin-runtime')
- make all Kotlin modules from the compiler depend on 'util' for clarity
- put 'util' and 'util.runtime' to the bottom of the list everywhere: when
kotlin-runtime gets reflection, classes from core/ should have higher
priority than their previous versions from kotlin-runtime.jar