GrafX:  Remove empty corpus files, lib -> source
Vectoria:  Remove empty corpus files
LICENSE:  Add symlink to GPL document

Add LICENSE symlink now that LINKS is gone.
xv68k:  List memory map sizes as well as offsets
engines/v68k/utils/pack68k.pl -> utils/pack.pl
MacFixup:  Correct "ACCESSOR_CALLS_ARE_FUNCTIONS"