Handle multiple definition locations in a nicer way

Instead of precalculating a set() to get unique symbols, precalculate a
list with any duplicates from multiple definition locations removed, and
preserve the order of the symbols within it.

This makes it possible to get rid of the Symbol._written shenanigans in
functions that only need to iterate through unique symbols in sorted
order, which is all of them except write_config() (because it needs to
walk the entire menu tree).

0 files changed, 0 insertions, 0 deletions