tweak SI a little so that it doesn't block things which block on the status reg. git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4713 8ced0084-cf51-0410-be5f-012b33b47a6e
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1881 8ced0084-cf51-0410-be5f-012b33b47a6e
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@926 8ced0084-cf51-0410-be5f-012b33b47a6e