Bug#548311: ivy: command-line usage does not work as advertised in doc

[Yann Dirson]

Package: ivy
Version: 2.1.0~rc2-2

http://ant.apache.org/ivy/history/latest-milestone/standalone.html says
the following should work with rc2, but I get an error:

$ java -jar /usr/share/java/ivy.jar -?
Failed to load Main-Class manifest attribute from
/usr/share/java/ivy.jar


It may just be me lacking a clue, in which case some note about this
particular usage could be added to README.Debian.