Win32TTY: Fix using a console font with wide glyphs

Added support to detect when the current console font has glyphs
that are too wide and will cause rendering errors in the console.
If detected, we warn the user and change the code page to 437
and the font to Consolas. At exit, if we had changed the font
and code page then we will restore to the original font and code page.

src/options.c

@@ -5114,6 +5114,7 @@ boolean setinitial, setfromfile;
                 assign_graphics(ROGUESET);
         } else if (!rogueflag)
             assign_graphics(PRIMARY);
+        preference_update("symset");
         need_redraw = TRUE;
         return TRUE;