Rather than using a hardcoded table of list-to-type extraction function, add a 'ListTo' attribute to the function data. No error is raised if more than one function exists to convert to the same type.
This change is of questionable usefulness, but it should soothe those allergic to magic names/numbers. I cringed a bit myself.
While on it, change the syntax error that was raised when the corresponding conversion function did not exist, to a tailor-made error.
llSubStringIndex and llListFindList with min=-1 allow optimizing this:
if (llListFindList(...) < 0) -> if (~llListFindList(...))
That has been implemented since long, but we didn't have the data.
This solves a long-standing issue where we needed more data about LSL functions than just whether it's side-effect-free.
There's still some debug code, which is kept for history purposes.
