Add worker for each disk image specified

Remove loading the drive, that is the job of the worker.

guestfs-inspectd.c

@@ -5,18 +5,12 @@
 
 int main(int argc, char **argv) {
   if (argc < 2) {
-    printf("Usage: %s <disk-path>\n", argv[0]);
+    printf("Usage: %s <disk-path> ...\n", argv[0]);
     return EXIT_FAILURE;
   }
 
-  guestfs_h *g = guestfs_create();
-
-  for (int i = 1; i < argc; i++) {
-    printf("Loading drive %s...\n", argv[i]);
-    guestfs_add_drive(g, argv[i]);
-  }
-
-  guestfs_launch(g);
+  // One worker per disk image.
+  zactor_t *workers[argc-1];
 
   char **filesystems = guestfs_list_filesystems(g);
    if (filesystems == NULL)