Move JVM specific IC test data to separate dir

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

@@ -0,0 +1,3 @@
+package foo
+
+fun main(args: Array<String>) = println("a")

jps-plugin/testData/incremental/withJava/other/mainRedeclaration/a.kt.new

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+package foo
+
+fun main(args: Array<String>) = println("A")

jps-plugin/testData/incremental/withJava/other/mainRedeclaration/b.kt

@@ -0,0 +1,3 @@
+package foo
+
+fun main(args: Array<String>) = println("b")

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

@@ -0,0 +1,11 @@
+================ Step #1 =================
+
+Cleaning output files:
+  out/production/module/META-INF/module.kotlin_module
+  out/production/module/foo/AKt.class
+End of files
+Compiling files:
+  src/a.kt
+End of files
+Exit code: OK
+------------------------------------------