Gradle IC: support multifile classes

jps-plugin/testData/incremental/classHierarchyAffected/inferredTypeArgumentChanged/gradle-build.log

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+================ Step #1 =================
+
+Cleaning output files:
+  out/production/module/B.class
+End of files
+Compiling files:
+  src/B.kt
+End of files
+Marked as dirty by Kotlin:
+  src/C.kt
+  src/getListOfB.kt
+  src/getListOfC.kt
+  src/useListOfAWithListOfB.kt
+  src/useListOfAWithListOfC.kt
+Exit code: ADDITIONAL_PASS_REQUIRED
+------------------------------------------
+Cleaning output files:
+  out/production/module/C.class
+  out/production/module/GetListOfBKt.class
+  out/production/module/GetListOfCKt.class
+  out/production/module/META-INF/module.kotlin_module
+  out/production/module/UseListOfAWithListOfBKt.class
+  out/production/module/UseListOfAWithListOfCKt.class
+End of files
+Compiling files:
+  src/C.kt
+  src/getListOfB.kt
+  src/getListOfC.kt
+  src/useListOfAWithListOfB.kt
+  src/useListOfAWithListOfC.kt
+End of files
+Exit code: ABORT
+------------------------------------------
+COMPILATION FAILED
+Type mismatch: inferred type is List<B> but List<A> was expected
+Type mismatch: inferred type is List<C> but List<A> was expected
+
+================ Step #2 =================
+
+Cleaning output files:
+  out/production/module/B.class
+End of files
+Compiling files:
+  src/B.kt
+  src/C.kt
+  src/getListOfB.kt
+  src/getListOfC.kt
+  src/useListOfAWithListOfB.kt
+  src/useListOfAWithListOfC.kt
+End of files
+Exit code: OK
+------------------------------------------