Non-808x interpreters: fetch the next instruction after a CR0 paging bit toggle with the old CR0 paging bit value, fixes SCO Unix.

src/cpu/cpu.c

@@ -182,6 +182,7 @@ int cpu_rom_prefetch_cycles;
 int cpu_waitstates;
 int cpu_cache_int_enabled;
 int cpu_cache_ext_enabled;
+int cpu_flush_pending;
 int cpu_isa_speed;
 int cpu_pci_speed;
 int cpu_isa_pci_div;