Defines starting with `n' in pexpert/i386

• NC pexpert/i386/kd.h:511
• NORM_STATE pexpert/i386/kd.h:400
• NUMKEYS pexpert/i386/kd.h:389
• NUMOUTPUT pexpert/i386/kd.h:391
• NUMSTATES pexpert/i386/kd.h:390