Move JVM specific IC test data to separate dir

jps-plugin/testData/incremental/withJava/other/multifileClassFileAdded/a.kt

@@ -0,0 +1,4 @@
+@file:[JvmName("Test") JvmMultifileClass]
+package test
+
+fun a() = "a"

jps-plugin/testData/incremental/withJava/other/multifileClassFileAdded/b.kt.new

@@ -0,0 +1,4 @@
+@file:[JvmName("Test") JvmMultifileClass]
+package test
+
+fun b() = "b"

jps-plugin/testData/incremental/withJava/other/multifileClassFileAdded/build.log

@@ -0,0 +1,7 @@
+================ Step #1 =================
+
+Compiling files:
+  src/b.kt
+End of files
+Exit code: OK
+------------------------------------------

jps-plugin/testData/incremental/withJava/other/multifileClassFileAdded/gradle-build.log

@@ -0,0 +1,8 @@
+================ Step #1 =================
+
+Compiling files:
+  src/a.kt
+  src/b.kt
+End of files
+Exit code: OK
+------------------------------------------