Up-to-date version and link in ASM/CGLIB/Objenesis package javadoc

Issue: SPR-16405
Issue: SPR-15600

build.gradle

@@ -289,10 +289,9 @@ project("spring-build-src") {
 project("spring-core") {
 	description = "Spring Core"
 
-	// As of Spring 4.0.3, spring-core includes asm 5.x and repackages cglib 3.2, inlining
-	// both into the spring-core jar. cglib 3.2 itself depends on asm 5.x and is therefore
-	// further transformed by the JarJar task to depend on org.springframework.asm; this
-	// avoids including two different copies of asm unnecessarily.
+	// spring-core includes asm and repackages cglib, inlining both into the spring-core jar.
+	// cglib itself depends on asm and is therefore further transformed by the JarJar task to
+	// depend on org.springframework.asm; this avoids including two different copies of asm.
 	def cglibVersion = "3.2.6"
 	def objenesisVersion = "2.6"
 

spring-core/src/main/java/org/springframework/asm/package-info.java

 /**
  * Spring's repackaging of
- * <a href="http://asm.ow2.org">ASM</a>
- * (for internal use only).
+ * <a href="http://asm.ow2.org">ASM 6.0</a>
+ * (with Spring-specific patches; for internal use only).
  *
  * <p>This repackaging technique avoids any potential conflicts with
  * dependencies on ASM at the application level or from third-party

spring-core/src/main/java/org/springframework/cglib/package-info.java

 /**
  * Spring's repackaging of
- * <a href="http://cglib.sourceforge.net">CGLIB</a>
- * (for internal use only).
+ * <a href="https://github.com/cglib/cglib">CGLIB 3.2</a>
+ * (with Spring naming strategy; for internal use only).
  *
  * <p>This repackaging technique avoids any potential conflicts with
  * dependencies on CGLIB at the application level or from third-party

spring-core/src/main/java/org/springframework/objenesis/package-info.java

 /**
  * Spring's repackaging of
- * <a href="http://objenesis.org">Objenesis 2.1</a>
- * (for internal use only).
+ * <a href="http://objenesis.org">Objenesis 2.6</a>
+ * (with SpringObjenesis entry point; for internal use only).
  *
  * <p>This repackaging technique avoids any potential conflicts with
  * dependencies on different Objenesis versions at the application