Set process encoding/decoding for inferior fsi.exe to utf-8

Emacs fails to detect the encoding when using (default) undecided-dos.

Fixes #175.

Author: juergenhoetzel

inf-fsharp-mode.el

@@ -93,7 +93,11 @@ be sent from another buffer in fsharp mode.
           (process-connection-type nil))
       (with-current-buffer (apply (function make-comint)
                                   inferior-fsharp-buffer-subname
-                                  (car cmdlist) nil (cdr cmdlist))
+                                  (car cmdlist) nil
+				  (cdr cmdlist))
+	(when (eq system-type 'windows-nt)
+	  (set-process-coding-system (get-buffer-process (current-buffer))
+				     'utf-8 'utf-8))
         (inferior-fsharp-mode))
       (display-buffer inferior-fsharp-buffer-name))))