build: update pkg-config templates

fwd.hpp

@@ -0,0 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 2018 Danny Robson <danny@nerdcruft.net>
+ */
+
+#pragma once

libcruft-crypto.pc.in

@@ -7,6 +7,6 @@ Name: libcruft-crypto
 Description: A naive C++ cryptographic library
 URL: http://nerdcruft.net/
 Version: @VERSION@
-Requires: libcruft-util
+Requires: libcruft
 Libs: -L${libdir}
 Cflags: -I${includedir}