Allow writing of multiple vector sizes to the configuration file.

cgminer.c

@@ -2304,6 +2304,10 @@ void write_config(FILE *fcfg)
 		fputs("\"intensity\" : \"", fcfg);
 		for(i = 0; i < nDevs; i++)
 			fprintf(fcfg, gpus[i].dynamic ? "%sd" : "%s%d", i > 0 ? "," : "", gpus[i].intensity);
+		fputs("\",\n\"vectors\" : \"", fcfg);
+		for(i = 0; i < nDevs; i++)
+			fprintf(fcfg, "%s%d", i > 0 ? "," : "",
+				gpus[i].vwidth);
 #ifdef HAVE_ADL
 		fputs("\",\n\"gpu-engine\" : \"", fcfg);
 		for(i = 0; i < nDevs; i++)

ocl.c

@@ -345,8 +345,10 @@ _clState *initCl(unsigned int gpu, char *name, size_t nameSize)
 
 	if (gpus[gpu].vwidth)
 		clState->vwidth = gpus[gpu].vwidth;
-	else
+	else {
 		clState->vwidth = preferred_vwidth;
+		gpus[gpu].vwidth = preferred_vwidth;
+	}
 
 	if (gpus[gpu].work_size && gpus[gpu].work_size <= clState->max_work_size)
 		clState->wsize = gpus[gpu].work_size;