CgiEnvironment for WIN32

[Edward Diener]

Line 48 in CgiEnvironment.cpp is:

 _setmode(_fileno(stdin), _O_BINARY);

The _fileno function, or macro, is in stdio.h . Therefore stdio.h should 
be included in the source file. It is just an implementation detail that 
stdio.h happens to be included by another one of the WIN32 header files. 
The corrected lines 31-34 should read:

#ifdef WIN32
#include <io.h>
#include <fcntl.h>
#include <stdio.h>
#endif