add doco for prepare-src-filesystem git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115002 13f79535-47bb-0310-9956-ffa450edef68
add doco for prepare-src-filesystem git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@115002 13f79535-47bb-0310-9956-ffa450edef68