add an mgflags parameter to mapglyph() to alter how it behaves internally

avoid a recent save-value,call,restore-value kludge by adding
an mgflags parameter to mapglyph() to control its behavior

 Changes to be committed:
	modified:   doc/window.doc
	modified:   include/extern.h
	modified:   include/hack.h
	modified:   src/detect.c
	modified:   src/mapglyph.c
	modified:   src/pager.c
	modified:   sys/amiga/winfuncs.c
	modified:   sys/wince/mhmap.c
	modified:   win/Qt/qt_win.cpp
	modified:   win/Qt4/qt4map.cpp
	modified:   win/X11/winmap.c
	modified:   win/curses/cursdial.c
	modified:   win/curses/cursinvt.c
	modified:   win/curses/cursmain.c
	modified:   win/gem/wingem.c
	modified:   win/tty/wintty.c
	modified:   win/win32/mhmap.c
	modified:   win/win32/mswproc.c

win/curses/cursdial.c

@@ -1176,7 +1176,7 @@ menu_display_page(nhmenu *menu, WINDOW * win, int page_num, char *selectors)
         if (menu_item_ptr->glyph != NO_GLYPH && iflags.use_menu_glyphs) {
             unsigned special;  /*notused */
 
-            mapglyph(menu_item_ptr->glyph, &curletter, &color, &special, 0, 0);
+            mapglyph(menu_item_ptr->glyph, &curletter, &color, &special, 0, 0, 0);
             curses_toggle_color_attr(win, color, NONE, ON);
             mvwaddch(win, menu_item_ptr->line_num + 1, start_col, curletter);
             curses_toggle_color_attr(win, color, NONE, OFF);

win/curses/cursinvt.c

@@ -125,7 +125,7 @@ curses_add_inv(int y,
         int symbol = 0;
         attr_t glyphclr;
 
-        mapglyph(glyph, &symbol, &color, &dummy, u.ux, u.uy);
+        mapglyph(glyph, &symbol, &color, &dummy, u.ux, u.uy, 0);
         glyphclr = curses_color_attr(color, 0);
         wattron(win, glyphclr);
         wprintw(win, "%c ", symbol);

win/curses/cursmain.c

@@ -665,7 +665,7 @@ curses_print_glyph(winid wid, XCHAR_P x, XCHAR_P y, int glyph,
     int attr = -1;
 
     /* map glyph to character and color */
-    mapglyph(glyph, &ch, &color, &special, x, y);
+    mapglyph(glyph, &ch, &color, &special, x, y, 0);
     if ((special & MG_PET) && iflags.hilite_pet) {
         attr = iflags.wc2_petattr;
     }