Fix ant dependency processing for elisp files.

Source files now get copied for recompilation if they are more
recent than the byte compiled files. jde-autload.el is also
rebuilt correctly if missing or not compiled.

git-svn-id: https://jdee.svn.sourceforge.net/svnroot/jdee/trunk/jdee@276 381a1f10-3442-0410-997e-ef331cd04102