Moved current incremental compiler test data into subdirectory.

Tweaked test generator to avoid creating test methods for parent directory of tests.

jps-plugin/testData/incremental/pureKotlin/dependencyClassReferenced/a.kt

@@ -0,0 +1,6 @@
+package test
+
+fun a(ref: kotlin.test.Asserter) {
+    b(ref)
+    println(":)")
+}

jps-plugin/testData/incremental/pureKotlin/dependencyClassReferenced/a.kt.new

@@ -0,0 +1,6 @@
+package test
+
+fun a(ref: kotlin.test.Asserter) {
+    b(ref)
+    println(":)")
+}

jps-plugin/testData/incremental/pureKotlin/dependencyClassReferenced/b.kt

@@ -0,0 +1,6 @@
+package test
+
+fun b(ref: kotlin.test.Asserter) {
+    a(ref)
+    println(":)")
+}

jps-plugin/testData/incremental/pureKotlin/dependencyClassReferenced/build.log

@@ -0,0 +1,7 @@
+Cleaning output files:
+out/production/module/test/TestPackage-a-*.class
+out/production/module/test/TestPackage.class
+End of files
+Compiling files:
+src/a.kt
+End of files