more window port interface adjustments

further adjustments to the window port interface to pass a pointer
to a glyph_info struct which describes not just the glyph number
itself, but also the ttychar, the color, the glyphflags, and the
symset index.

This affects two existing window port calls that get passed glyphs
and does the parameter consistently for both of them using the
glyph_info struct pointer:
	print_glyph()
	add_menu().

The recently added glyphmod parameter is now unnecessary and has been
removed.

win/win32/mhmsg.h

@@ -36,9 +36,8 @@ typedef struct mswin_nhmsg_putstr {
 typedef struct mswin_nhmsg_print_glyph {
     XCHAR_P x;
     XCHAR_P y;
-    int glyph;
-    int bkglyph;
-    int glyphmod[NUM_GLYPHMOD];
+    glyph_info glyphinfo;
+    glyph_info bkglyphinfo;
 } MSNHMsgPrintGlyph, *PMSNHMsgPrintGlyph;
 
 typedef struct mswin_nhmsg_cliparound {
@@ -47,7 +46,7 @@ typedef struct mswin_nhmsg_cliparound {
 } MSNHMsgClipAround, *PMSNHMsgClipAround;
 
 typedef struct mswin_nhmsg_add_menu {
-    int glyph;
+    glyph_info glyphinfo;
     const ANY_P *identifier;
     CHAR_P accelerator;
     CHAR_P group_accel;