Add missing package-info files for common packages

Issue: SPR-14420
(cherry picked from commit 66ec1c1)

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

@@ -1,6 +1,6 @@
 /**
  * Spring's repackaging of
- * <a href="http://cglib.sourceforge.net">net.sf.cglib 3.1</a>
+ * <a href="http://cglib.sourceforge.net">net.sf.cglib 3.2</a>
  * (for internal use only).
  *
  * <p>This repackaging technique avoids any potential conflicts with
@@ -9,7 +9,7 @@
  *
  * <p>As this repackaging happens at the class file level, sources
  * and javadocs are not available here. See the original
- * <a href="http://cglib.sourceforge.net/apidocs">CGLIB 3.1 javadocs</a>
+ * <a href="http://cglib.sourceforge.net/apidocs">CGLIB 3.2 javadocs</a>
  * for details when working with these classes.
  */
 package org.springframework.cglib;