Fix loading of EDSK files with redundant sector images (bug #293).


git-svn-id: svn://svn.code.sf.net/p/fuse-emulator/code/trunk@4918 82cbdd72-22ac-47d8-a7df-4a7c34dd7743
Allow disabling Spectranet code (more from bug #259).


git-svn-id: svn://svn.code.sf.net/p/fuse-emulator/code/trunk@4919 82cbdd72-22ac-47d8-a7df-4a7c34dd7743