Adjusted alternate version to preserve formatting

The first alt version added some whitespaces that broke the outline, so
I simply filled those up.  I also expanded tabs to spaces since there is
no size limit restriction for the alternate version.

The second alt version attempted to force binary mode with _setmode()
and _fileno() calls, plus some additional headers.  Rather than doing it
this way, I hack in the binary mode adjustments via preprocessor.

Actually I did a similar trick for IOCCC 2011, but I guess I didn't
submit that version:
https://uguu.org/archive/ioccc2011/akari/source/binmode_main.h

The file above uses _setmode() and _fileno().  The leading underscore
indicates that they were nonstandard extensions.  For the binmode_main.h
in this change, I have opted for setmode() and STDIN_FILENO instead,
which are more widely available.

2012/omoikane/binmode_main.h

@@ -0,0 +1,39 @@
+/* Preprocessor hack to set binary mode for stdin and stdout.
+
+   This replaces main() with an alternative function forces binary
+   modes.  This is intended to included via compiler arguments, so we
+   would be able to enable binary modes without modifying the original
+   program source.  Conceptually, it's similar to LD_PRELOAD, except
+   we hack it in via preprocessor.
+
+   It only works for programs where main() occurs just once.
+*/
+
+#if defined(_WIN32)
+   #include<stdio.h>
+   #include<fcntl.h>
+   #include<io.h>
+   #include<unistd.h>
+
+   #define main \
+      /* Forward declaration for the updated main(), now renamed  */         \
+      /* binmode_main().  Return type is omitted since this macro */         \
+      /* is expanded just after the return type.                  */         \
+      binmode_main(int argc, char **argv);                                   \
+                                                                             \
+      /* Updated main(). */                                                  \
+      int main(int argc, char **argv)                                        \
+      {                                                                      \
+         /* Set binary modes. */                                             \
+         setmode(STDIN_FILENO, O_BINARY);                                    \
+         setmode(STDOUT_FILENO, O_BINARY);                                   \
+                                                                             \
+         /* Call the original main(). */                                     \
+         return binmode_main(argc, argv);                                    \
+      }                                                                      \
+                                                                             \
+      /* Definition for the original main.  Function arguments are       */  \
+      /* omitted since this macro is expanded just before the arguments. */  \
+      int binmode_main
+
+#endif