Shane Mc Cormack
9b732b42c6
Add --help to installer.
Use --help to check if java is the right version (like the launcher), rather than just running the installer and moaning if it exits with non 0.
Fixes issue 1479
git-svn-id: http://svn.dmdirc.com/trunk@445500569f92-eb28-0410-84fd-f71c24880f