Restructure "Safe Delete" test data directories

Conflicts:
	generators/org/jetbrains/jet/generators/tests/GenerateTests.java

idea/testData/safeDelete/deleteFunction/kotlinFunction/fun2.kt

@@ -0,0 +1,11 @@
+package test
+
+import test.foo
+
+fun <caret>foo() {
+
+}
+
+class B {
+    val ref = ::foo
+}