fix for Target rewriting for nested "include" only works when "as" is specified, Bugzilla PR 54940

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1481662 13f79535-47bb-0310-9956-ffa450edef68
recommending to use jsch 0.1.50 going forward due to fix of https://sourceforge.net/tracker/index.php?func=detail&aid=3605486

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1481669 13f79535-47bb-0310-9956-ffa450edef68
updating ReleaseInstructions since svn:externals do not work currently with svnwcsub

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@1481670 13f79535-47bb-0310-9956-ffa450edef68