Move JVM specific IC test data to separate dir

jps-plugin/testData/incremental/withJava/other/packageMultifileClassPrivateOnlyChanged/pkg1.kt.new

@@ -0,0 +1,11 @@
+@file:JvmName("Utils")
+@file:JvmMultifileClass
+package test
+
+fun commonFun1() {}
+
+private val addedVal1: Int = 20
+
+private fun addedFun1(): Int = 50
+
+private fun changedFun1(arg: String) {}