initial check-in, version 0.5.0

src/string/strchrnul.c

@@ -0,0 +1,7 @@
+#include <string.h>
+
+char *strchrnul(const char *s, int c)
+{
+	char *p = strchr(s, c);
+	return p ? p : (char *)s + strlen(s);
+}