K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2018-02-19T22:29:16.430316Z
K 7
svn:log
V 473
stand/lua: Cache swapped menu, and don't create locals for swapping

Building the swapped welcome menu (first two items swapped) is kind of a
sluggish, because it requires a full (recrusive) shallow copy of the welcome
menu. Cache the result of that and re-use it later, instead of building it
everytime.

While here, don't create temporary locals just for swapping. The following
is just as good:

x, y = y, x;

Reported by:	Alexander Nasonov <alnsn@yandex.ru> (swapping)

END