update to current private

include/string.h

@@ -1,8 +1,9 @@
 #ifndef _STRING_H_
 #define _STRING_H_
-#include "ultra64/types.h"
-void* memcpy(void*, const void*, size_t);
-size_t strlen(const u8 *str);
-const u8 *strchr(const u8 *str, u32 ch);
+#include <PR/ultratypes.h>
+
+extern void *memcpy(void *, const void *, size_t);
+extern unsigned char *strchr(const unsigned char *, int);
+extern size_t strlen(const unsigned char *);
 
 #endif