Move: Fix tests in IDEA 2017.1

Do not prevent usages search if target directory is not known yet.
Force content root configuration for multi-module tests

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/KotlinMultiFileTestCase.kt

@@ -42,7 +42,9 @@ abstract class KotlinMultiFileTestCase : MultiFileTestCase() {
                     object : VirtualFileVisitor<Any>() {
                         override fun visitFile(file: VirtualFile): Boolean {
                             if (!file.isDirectory && file.name.endsWith(ModuleFileType.DOT_DEFAULT_EXTENSION)) {
-                                createModule(File(file.path), StdModuleTypes.JAVA)
+                                val module = createModule(File(file.path), StdModuleTypes.JAVA)
+                                val contentRoot = file.parent.findChild("src")!!
+                                PsiTestUtil.addSourceContentToRoots(module, contentRoot)
                                 return false
                             }
 

idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveFilesOrDirectories/MoveKotlinFileHandler.kt

@@ -69,7 +69,6 @@ class MoveKotlinFileHandler : MoveFileHandler() {
 
     fun initMoveProcessor(psiFile: PsiFile, newParent: PsiDirectory?): MoveKotlinDeclarationsProcessor? {
         if (psiFile !is KtFile) return null
-        if (newParent == null) return null
         val packageNameInfo = psiFile.getPackageNameInfo(newParent, false) ?: return null
 
         val project = psiFile.project