Honor the "pause after exit" setting for external programs.

exec/lbshell.js

@@ -708,6 +708,8 @@ while(bbs.online) {
 					}
 					else {
 						bbs.exec_xtrn(xtrn_area.sec_list[curr_xtrnsec].prog_list[parseInt(x_prog)].number);
+						if(xtrn_area.sec_list[curr_xtrnsec].prog_list[parseInt(x_prog)].settings & XTRN_PAUSE)
+							console.pause();
 					}
 					start_mouse();
 					draw_main(true);