More on fopen() problem on Cygwin

[Lars J. Aas]

Even after setting /cygdrive to binary mode, the problem with
fopen(file, "w") persists (since I had fixed my own autoconf
repository to use "wb" I didn't notice it until I tried to configure
glib which has it's own set of macros like that.

I suspect that it is related to the fact that I'm using VC++'s
cl.exe instead of gcc, so another C library is used.  Does that
make sense?

  Lars J