Added a single space.
Shortened error messages.
Replaced ruter_strnlen() with util_strnlen().
Implemented a basic argument parser.
Added TOK_NONE.
Removed ruter_strndup(). See src/include/util.h for util_strndup().
Implemented util_strdup(), util_strndup() and util_strnlen().
Added args_parse() test.
Added kernel-doc.