Add KFunction.name, support reflection for function references

#KT-7694 Fixed

core/descriptors.runtime/src/org/jetbrains/kotlin/load/java/structure/reflect/ReflectJavaClass.kt

@@ -29,7 +29,7 @@ import java.util.Arrays
 public class ReflectJavaClass(
         private val klass: Class<*>
 ) : ReflectJavaElement(), ReflectJavaAnnotationOwner, ReflectJavaModifierListOwner, JavaClass {
-    override val element: AnnotatedElement get() = klass
+    override val element: Class<*> get() = klass
 
     override val modifiers: Int get() = klass.getModifiers()
 

core/descriptors.runtime/src/org/jetbrains/kotlin/load/java/structure/reflect/ReflectJavaTypeParameter.kt

@@ -26,7 +26,7 @@ import java.lang.reflect.Method
 import java.lang.reflect.TypeVariable
 
 public class ReflectJavaTypeParameter(
-        private val typeVariable: TypeVariable<*>
+        public val typeVariable: TypeVariable<*>
 ) : ReflectJavaElement(), JavaTypeParameter {
     override fun getUpperBounds(): List<ReflectJavaClassifierType> {
         val bounds = typeVariable.getBounds().map { bound -> ReflectJavaClassifierType(bound) }