GameDB: Updates by pgert. 

-Added patch for Drakan (SCES-50006) to improve the corruption problems when using resolution scaling.
-Many comment modifications and console comments explaining that BIOS boot is required for correct language selection.

Thanks for the updates :)

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5621 96395faa-99c1-11dd-bbfe-3dabce05a288