Changes
dIon Gillard
Kurt Schrader
Externalise output directory and encoding.
JellyDoc report works correctly now with multiproject.
Only register report if sources exist
Sort tag libraries, tags and attributes accordingly
update to use maven.docs.*/maven.gen.docs
Upgrade to dom4j 1.4
Change use of pom.build.sourceDirectory to not include the basedir. This must be placed in the pom
if a ${basedir} prefix is required.