headers: Declare missing open64(), freopen64() and tmpfile64() functions Signed-off-by: Martin Storsjö <martin@martin.st>

diff --git a/mingw-w64-headers/crt/io.h b/mingw-w64-headers/crt/io.h
index a6dc2f8..ac049e7 100644
--- a/mingw-w64-headers/crt/io.h
+++ b/mingw-w64-headers/crt/io.h

@@ -353,6 +353,7 @@
   long __cdecl lseek(int _FileHandle,long _Offset,int _Origin) __MINGW_ATTRIB_DEPRECATED_MSVC2005;
   char *__cdecl mktemp(char *_TemplateName)  __MINGW_ATTRIB_DEPRECATED_MSVC2005;
   int __cdecl open(const char *_Filename,int _OpenFlag,...)  __MINGW_ATTRIB_DEPRECATED_MSVC2005;
+  int __cdecl open64(const char *_Filename,int _OpenFlag,...);
   int __cdecl read(int _FileHandle,void *_DstBuf,unsigned int _MaxCharCount)  __MINGW_ATTRIB_DEPRECATED_MSVC2005;
   int __cdecl setmode(int _FileHandle,int _Mode) __MINGW_ATTRIB_DEPRECATED_MSVC2005;
   int __cdecl sopen(const char *_Filename,int _OpenFlag,int _ShareFlag,...) __MINGW_ATTRIB_DEPRECATED_MSVC2005;

diff --git a/mingw-w64-headers/crt/stdio.h b/mingw-w64-headers/crt/stdio.h
index 1cd6edc..ff9a363 100644
--- a/mingw-w64-headers/crt/stdio.h
+++ b/mingw-w64-headers/crt/stdio.h

@@ -575,6 +575,7 @@
   int __cdecl fputs(const char * __restrict__ _Str,FILE * __restrict__ _File);
   size_t __cdecl fread(void * __restrict__ _DstBuf,size_t _ElementSize,size_t _Count,FILE * __restrict__ _File);
   FILE *__cdecl freopen(const char * __restrict__ _Filename,const char * __restrict__ _Mode,FILE * __restrict__ _File) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
+  FILE *__cdecl freopen64(const char * __restrict__ _Filename,const char * __restrict__ _Mode,FILE * __restrict__ _File);
   int __cdecl fsetpos(FILE *_File,const fpos_t *_Pos);
   int __cdecl fsetpos64(FILE *_File,const fpos_t *_Pos); /* fsetpos already 64bit */
   int __cdecl fseek(FILE *_File,long _Offset,int _Origin);
@@ -657,6 +658,7 @@
   __MINGW_MS_PRINTF(1, 0) __MINGW_ATTRIB_NONNULL(1)
   _CRTIMP int __cdecl _vscprintf(const char * __restrict__ _Format,va_list _ArgList);
   FILE *__cdecl tmpfile(void) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
+  FILE *__cdecl tmpfile64(void);
   char *__cdecl tmpnam(char *_Buffer);
   int __cdecl ungetc(int _Ch,FILE *_File);