upgrade to tiles-master-5.
upgrade to svnpubsub system using maven-scm-publish-plugin.
update the release and building pages for devs (svnpubsub, and referencing existing apache docs).
Update release documentation: build requires Java7, and build requires maven-3.0.5+


git-svn-id: https://svn.apache.org/repos/asf/tiles/framework/branches/TILES_3_0_X@1536457 13f79535-47bb-0310-9956-ffa450edef68