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

compiler/testData/loadJava/kotlinSignature/MethodWithGenerics.java

@@ -0,0 +1,12 @@
+package test;
+
+import java.lang.UnsupportedOperationException;
+import java.util.*;
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class MethodWithGenerics {
+    @KotlinSignature("fun foo(a : String, b : List<Entry<String?, String>?>) : String")
+    public String foo(String a, List<Map.Entry<String, String>> b) {
+        throw new UnsupportedOperationException();
+    }
+}