Use apps_shutdown() in all applications, in case someone decides not

to go the monolith way (does anyone do that these days?).

NOTE: a few applications are missing in this commit.  I've a few more
changes in them that I haven't tested yet.

apps/sess_id.c

@@ -272,6 +272,7 @@ bad:
 end:
 	if (out != NULL) BIO_free_all(out);
 	if (x != NULL) SSL_SESSION_free(x);
+	apps_shutdown();
 	EXIT(ret);
 	}