version 2.4 RC1 version of maven-plugin
Revert "version 2.4 RC1 version of maven-plugin"

This reverts commit 04b9b3e33ddab1d89509173c58f74e33acbeeecf.
Revert "Revert "version 2.4 RC1 version of maven-plugin""

This reverts commit f7d2f1967a911fc8a55019b7cceadab77b07ebd4.
Merge branch 'master' of github.com:grails/grails-maven