New attribute outputfile for <jjtree>.

PR: 21526
Submitted by:	Jene Jasper <jjasper at abz dot nl>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@274913 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272826 13f79535-47bb-0310-9956-ffa450edef68

(1) Make sure there is a Copyright notice on all visible files.

(2) Make sure all years in which the file has been modified are
listed.

(3) Make sure the format is consistent, i.e. separate consecutive
years with a dash, not a comma.

When Stephane changed starteam.html it has been 2001 in France but
2002 in Australia - does that mean we add 2002 to the Copyright line
or not?  ;-)


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270652 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270163 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268652 13f79535-47bb-0310-9956-ffa450edef68