Fixed up JavaDocs so they build without errors. The main changes were:
o Capitalisation. Please capitalise the first word of a new sentence, otherwise break-iterator complains.
o @created tags. These aren't valid JavaDoc, and the info is in CVS anyway...
git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272051 13f79535-47bb-0310-9956-ffa450edef68