j2k: flatten test cases and testData directory structure

Move j2k/test/tests -> j2k/tests, j2k/test/testData -> j2k/testData

j2k/testData/fileOrElement/importStatement/importWithKeywords.java

@@ -0,0 +1,6 @@
+//file
+package test;
+
+import as.type.val.var.fun.is.in.object.when.trait.This;
+
+class Test {}

j2k/testData/fileOrElement/importStatement/importWithKeywords.kt

@@ -0,0 +1,6 @@
+// ERROR: Unresolved reference: `as`
+package test
+
+import `as`.type.`val`.`var`.`fun`.`is`.`in`.`object`.`when`.`trait`.`This`
+
+class Test

j2k/testData/fileOrElement/importStatement/importWithStar.java

@@ -0,0 +1,6 @@
+//file
+package org.jetbrains.jet.j2k;
+
+import org.jetbrains.annotations.*;
+
+public class Converter {}

j2k/testData/fileOrElement/importStatement/importWithStar.kt

@@ -0,0 +1,5 @@
+package org.jetbrains.jet.j2k
+
+import org.jetbrains.annotations.*
+
+public class Converter

j2k/testData/fileOrElement/importStatement/oneImport.java

@@ -0,0 +1,2 @@
+//file
+import java.util.Arrays;

j2k/testData/fileOrElement/importStatement/oneImport.kt

@@ -0,0 +1 @@
+import java.util.Arrays

j2k/testData/fileOrElement/importStatement/onlyImports.java

@@ -0,0 +1,3 @@
+//file
+import java.util.Arrays;
+import java.util.concurrent.ArrayBlockingQueue;

j2k/testData/fileOrElement/importStatement/onlyImports.kt

@@ -0,0 +1,3 @@
+// ERROR: Unresolved reference: ArrayBlockingQueue
+import java.util.Arrays
+import java.util.concurrent.ArrayBlockingQueue

j2k/testData/fileOrElement/importStatement/simpleImport.java

@@ -0,0 +1,6 @@
+//file
+package org.jetbrains.jet.j2k;
+
+import org.jetbrains.annotations.NotNull;
+
+public class Converter {}

j2k/testData/fileOrElement/importStatement/simpleImport.kt

@@ -0,0 +1,3 @@
+package org.jetbrains.jet.j2k
+
+public class Converter