fix view usage

intentionally not call out qvrot in the usage line (since dir is a
better name). But, leave it as a subcommand for legacy expectations.

src/libged/view/view.c

@@ -763,7 +763,7 @@ ged_view_func_core(struct ged *gedp, int argc, const char *argv[])
 	return ged_view_core(gedp, argc, argv);
 
 
-    static const char *usage = "ae|aet|auto|center|eye|lookat|printquat|qvrot|save|size|ypr [args]";
+    static const char *usage = "ae|aet|auto|center|eye|lookat|print|quat|save|size|ypr [args]";
 
     GED_CHECK_VIEW(gedp, BRLCAD_ERROR);
     GED_CHECK_ARGC_GT_0(gedp, argc, BRLCAD_ERROR);
@@ -818,7 +818,7 @@ ged_view_func_core(struct ged *gedp, int argc, const char *argv[])
 	return ged_quat_core(gedp, argc-1, argv+1);
     }
 
-    if (BU_STR_EQUAL(argv[1], "dir")) {
+    if (BU_STR_EQUAL(argv[1], "qvrot") || BU_STR_EQUAL(argv[1], "dir")) {
 	if (argc < 4)
 	    return ged_viewdir_core(gedp, argc-1, argv+1);
 	return ged_qvrot_core(gedp, argc-1, argv+1);