Update include directory

libc/include/stdio.h

@@ -0,0 +1,37 @@
+#ifndef _STDIO_H
+#define _STDIO_H
+
+#include <stdarg.h>
+#include <stddef.h>
+
+#define SEEK_SET 0
+
+typedef struct
+{
+    int unused;
+} FILE;
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    extern FILE *stderr;
+#define stderr stderr
+
+    int fclose(FILE *);
+    int fflush(FILE *);
+    FILE *fopen(const char *, const char *);
+    int fprintf(FILE *, const char *, ...);
+    size_t fread(void *, size_t, size_t, FILE *);
+    int fseek(FILE *, long, int);
+    long ftell(FILE *);
+    size_t fwrite(const void *, size_t, size_t, FILE *);
+    void setbuf(FILE *, char *);
+    int vfprintf(FILE *, const char *, va_list);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif