PDP8: Revised fix for Binary loader can't read multiple section tapes (#74) to make reading all sections optional based on the -A switch (from Dave Gesswein)

PDP8/pdp8_sys.c

@@ -216,6 +216,8 @@ for (;;) {
                     printf ("%d sections sucessfully read\n\r", sections_read);
                 return SCPE_CSUM;
                 }
+            if (!(sim_switches & SWMASK ('A')))        /* Load all sections? */
+                return SCPE_OK;
             sections_read++;
             break;
             }