fix javadoc comment

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1586196 13f79535-47bb-0310-9956-ffa450edef68
adding mention of Java 1.9

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1586198 13f79535-47bb-0310-9956-ffa450edef68
By default disable JavaDocs Doclint which was introduced in Java8 and breaks the builds due not-strict-html JavaDoc comments. Could be enabled via -DwithDoclint=true

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1586251 13f79535-47bb-0310-9956-ffa450edef68
JavaDoc fixes (for Java8 doclint) - first bunch

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1586262 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/ant into JUnit4Conversion