Added missing PSX system calls for Vagrant Story and Granstream Saga.
Added COP0 to the IOP subsystem for FF6 and Chrono Trigger PSF.
Added non-default char encoding handling in PSF tags.
Now patches the PSX-EXE header of loaded PSF files because Grandstream Saga specifies bad text section size in its header.
git-svn-id: http://svn.purei.org/purei/trunk@769 b36208d7-6611-0410-8bec-b1987f11c4a2