preliminary programmable VRM version support in w83781d.

Replace VID_FROM_REG() with vid_from_reg() in new sensors_vid.h.
      Update library so it can be set in sensors.conf.
      Add new documentation. Update mkpatch for new file.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1352 7894878c-1315-0410-8ee3-d5d059ff63e0

prog/sensors/chips.c

@@ -2103,7 +2103,7 @@ void print_w83781d(const sensors_chip_name *name)
         !sensors_get_feature(*name,SENSORS_W83781D_VID,&cur)) {
       if (valid) {
         print_label(label,10);
-        printf("%+6.2f V\n",cur);
+        printf("%+5.3f V\n",cur);
       }
     } else {
       printf("ERROR: Can't get VID data!\n");