[_WIN32, __GNUC__]: Reorganize the include files for WIN32 to

separate the MinGW environment from the MSVC environment and
WIN32 environment.  Reorganize the order of the includes so
the system files are always loaded first to prevent with misc.h defines.
Remove system file includes from misc.h.

src/lib/common/file.c

@@ -36,6 +36,9 @@
 #include <config.h>
 
 #include <errno.h>
+#if defined(_WIN32) && !defined(__GNUC__)
+#include <io.h>
+#endif
 #include <fcntl.h>
 #include <signal.h>
 #include <sys/types.h>