o Splitted plugin manager: One general component for any kind of Maven plugin, one specifically tailored for execution of build plugins. The generic plugin manager is meant to be reused by the new Site Plugin, the other plugin manager is private to the core.
maven/components/trunk/maven-core/src/main/java/org/apache/maven/classrealm/ClassRealmManager.java
maven/components/trunk/maven-core/src/main/java/org/apache/maven/plugin/internal/