[PD] Vanilla [list-s2l] prototype

[Matt Barber]

>> SplitTheAtoms = 16ms
>> VanillaRulz = 27ms
>> Teddy = 23ms
>> 1234.... = 140ms
>> PdIsGreat = 30ms
>
> using tclpd: under 0.05 ms for any of those.
>
> size of the external: about 260 bytes.
>
> and no symbol-table pollution, no memory leak.
>


I think this might underline how useful it would be for those of us
who use vanilla Pd to have some symbol manipulation tools in vanilla,
although I'm not convinced that I'm doing the symbol2list in the best
way for vanilla either (I used to think it couldn't be done at all).

Matt