[MinGW-dvlpr] Macro for stdio

[Wu Y. <ad...@ne...>]

stdio of MinGW has only functions of fileno, getchar, etc., but not the 
corresponding macro versions. Should we add them?

While some (like fileno) are very simple and straightforward, some are 
more complicated. I might be judged as "polluted" since I have seen the 
Microsoft header and source files. Should I post some articles here for 
a "clean-room" rewrite?

Best regards,

Wu Yongwei