Fix for bug #4313 "[PP]Replace ExitToShell() patch with CFM termination proc".  Also removed obsolete 68k code.
Fix for bug #4313 "[PP]Replace ExitToShell() patch with CFM termination proc".  Also removed obsolete 68k code.

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub