Zap toys/Config.in and instead create generated/Config.in from contents of
toys/*.c. Move relevant info into comment at the top of each toys/*.c. Also
convert more of Makefile into a thin wrapper around shell scripts that actually
do the work. (Makefile is only still there for the user interface.)
diff --git a/toys.h b/toys.h
index c54dbd6..0eb1ee1 100644
--- a/toys.h
+++ b/toys.h
@@ -6,7 +6,7 @@
* Licensed under GPL version 2, see file LICENSE in this tarball for details.
*/
-#include "generated/gen_config.h"
+#include "generated/config.h"
#include "lib/portability.h"