Provide some minimal allowance for use of multidim and jagged arrays

[hopscc]

Its currently almost possible to use multidimension (or jagged) arrays in cobra but the obvious way of doing this is stymied by the inability to explicitly declare the multidim or jagged array type.

Rectify this (at a minimum) so that these types of arrays can be used in cobra (albeit not easily since Lists are better (:-))

In lieu of anything else I suggest using the C# syntax

TYPE[][] for jagged
TYPE[,] for multidimension

and relying on a sharp fallthrough for constructor calls
(I also dont see any reason ATM to support more than 3 Dimensions).

[hopscc]

patch, new twst and relnote for above.

[hopscc]

See  Discussion topic (last few entries).