Added checking for function name in alternative signature.

compiler/testData/readJavaBinaryClass/kotlinSignature/error/WrongMethodName.java

@@ -0,0 +1,10 @@
+package test;
+
+import jet.runtime.typeinfo.KotlinSignature;
+
+public class WrongMethodName {
+    @KotlinSignature("fun bar() : String")
+    public String foo() {
+        throw new UnsupportedOperationException();
+    }
+}