Added in-place filtering with p-archiver 2.8

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1633510 13f79535-47bb-0310-9956-ffa450edef68
Added missing files, because I have forgotten how to use SVN

Removed some unused code

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1633523 13f79535-47bb-0310-9956-ffa450edef68
I am a klutz

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1633524 13f79535-47bb-0310-9956-ffa450edef68
Minor cleanups

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1633544 13f79535-47bb-0310-9956-ffa450edef68