o Fixed handling of project-level plugin dependencies. The plugin realm is a function of g:a:v and plugin dependencies. Given that the plugin realm is bound to the plugin descriptor, the plugin descriptor also becomes a function of g:a:v and plugin dependencies. So when looking up a mojo/plugin descriptor, the g:a:v is not sufficient.
maven/components/trunk/maven-core/src/main/java/org/apache/maven/lifecycle/DefaultLifecycleExecutor.java