Moved loadJava "general" tests to subdirectory.

compiler/testData/loadJava/compiledJavaCompareWithKotlin/kotlinSignature/error/AddingNullability.kt

@@ -0,0 +1,9 @@
+package test
+
+import java.util.*
+
+public open class AddingNullability : Object() {
+    public open fun foo() : Int {
+        throw UnsupportedOperationException()
+    }
+}