Translations update.

New translations: chinese and arabic.
Chinese looks pretty complete.
Thanks to anonymous translators :)

git-svn-id: svn+ssh://svn.code.sf.net/p/yabause/code/trunk@3223 d7be59e3-070e-4b9a-85a1-4646befae34d
Fixed a bug on machines without optical drive

This fix http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732804

git-svn-id: svn+ssh://svn.code.sf.net/p/yabause/code/trunk@3224 d7be59e3-070e-4b9a-85a1-4646befae34d