vchoi_fork

[svn-r3234] 
Purpose:
    a bug fix
Description:
    without explicitly including stdio.h in this file, it will fail in compiling
    at the first time of building up the library. It needs to be recompiled separetely. Now it can work. The real reason is to be investigated.
Solution:
     adding include <stdio.h> for win32.
Platforms tested:
    win 2000