- Added plugin interface function Video_AddMessage to both plugins and to the plugin specs.
- Added handling of the Video_AddMessage interface export from the core side.
- Added a print on Core::Init for testing purposes (might not be the best place).
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@176 8ced0084-cf51-0410-be5f-012b33b47a6e