Answer an array of MEOS values as the classes they are

[estebanzimanyi]

MEOS returns many values two ways: an array of pointers (Temporal **,
TInstant **) and an array of the values themselves, walked at the struct's
own stride (Span *, TBox *, STBox *). Both reach the wrapper as an array
of pointers, so both wrap element by element into the class each value's own
header names, and the object layer answers Span?[], STBox?[],
Temporal?[] where it answered nothing before. That is 29 more methods:
SpanSet.Spans, STBox.QuadSplit, Temporal.Instants, the bins and
splitNSpans families, 607 of the model's methods against 578.

Three tests read them: the spans of a float span set come back as FloatSpan
printing [8, 10] and [11, 12], the four quadrants of an STBox come back as
boxes, and the instants of a temporal float sequence come back as TFloatInst.