Honour more WINCAP flags.

win/tty/termcap.c

@@ -1161,6 +1161,11 @@ int color;
 	if (windowprocs.name != NULL &&
 	    !strcmpi(windowprocs.name, "Gem")) return TRUE;
 #endif
+#ifdef QT_GRAPHICS
+	/* XXX has_color() should be added to windowprocs */
+	if (windowprocs.name != NULL &&
+	    !strcmpi(windowprocs.name, "Qt")) return TRUE;
+#endif
 #ifdef AMII_GRAPHICS
 	/* hilites[] not used */
 	return iflags.use_color;