B01001 - bold menu_heading support

Not really a bug, but when TEXTCOLOR is defined, wintty can display menu
headings is bold upon request, but didn't.

doc/fixes34.3

@@ -110,6 +110,7 @@ Gnome: key values on unsigned char platform could fail to compare correctly
 Gnome: real extended command menu so all extended commands can be entered
 Gnome: ignore interrupts to avoid infinite loop in gnome library
 tty: avoid crash displaying quit inventory if inventory was already displayed
+tty: use "bold" in menu heading if available and requested
 winCE: ensure orphaned lockfile is always deleted on single-user handhelds
 
 

win/tty/termcap.c

@@ -1040,6 +1040,9 @@ int n;
 		    if(nh_US) return nh_US;
 	    case ATR_BOLD:
 	    case ATR_BLINK:
+#if defined(TERMLIB) && defined(TEXTCOLOR)
+		    if (MD) return MD;
+#endif
 		    return nh_HI;
 	    case ATR_INVERSE:
 		    return MR;