Rename test data folder according to the new test naming convention.

compiler/testData/loadJava/kotlinSignature/error/ExtraUpperBound.java

@@ -0,0 +1,10 @@
+package test;
+
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class ExtraUpperBound {
+    @KotlinSignature("fun <A : Runnable> foo() : String where A : Cloneable")
+    public <A extends Runnable> String foo() {
+        throw new UnsupportedOperationException();
+    }
+}