hg: jdk9/sandbox/jdk: 8161500: Use getTypeName and StringJoiner in core reflection toString methods

[chris.hegarty at oracle.com]

Changeset: 13ba68250391
Author:    darcy
Date:      2016-07-18 10:27 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/13ba68250391

8161500: Use getTypeName and StringJoiner in core reflection toString methods
Reviewed-by: redestad

! src/java.base/share/classes/java/lang/Class.java
! src/java.base/share/classes/java/lang/reflect/Executable.java
! src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/GenericArrayTypeImpl.java
! src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/ParameterizedTypeImpl.java
! src/java.base/share/classes/sun/reflect/generics/reflectiveObjects/WildcardTypeImpl.java
! test/java/lang/Class/GenericStringTest.java
! test/java/lang/reflect/Constructor/GenericStringTest.java
! test/java/lang/reflect/Field/GenericStringTest.java
! test/java/lang/reflect/Method/GenericStringTest.java