Show download size better (use `bc` to convert from bytes to nice values)
Work with fetch/curl if wget isn't available. (BSD/OSX - Altho this script shouldn't be used on the latter, and there is no java6 download for the former at present)
git-svn-id: http://svn.dmdirc.com/trunk@423100569f92-eb28-0410-84fd-f71c24880f
Lotsa changes to the linux installer to make it also run on OpenSolaris (and possibly normal solaris aswell, I don't have gui access to a normal solaris machine from here will try when I go back to uni)