Remove unused includes and protect header

include/bsd/getopt.h

@@ -1,4 +1,10 @@
+#ifndef LIBBSD_GETOPT_H
+#define LIBBSD_GETOPT_H
+
 #include <getopt.h>
+
 extern int optreset;
 
 int bsd_getopt (int, char **, char *);
+
+#endif

include/bsd/stdlib.h

@@ -1,9 +1,6 @@
 #ifndef LIBBSD_STDLIB_H
 #define LIBBSD_STDLIB_H
 
-#include <sys/types.h>
-#include <stdio.h>
-
 const char *fmtcheck(const char *, const char *);
 
 #endif