Add build in functions operating on collections of primitive (and complex?) types

Specify equality for collections of primitive types and extend the syntax, using the comma-separated list of literal primitive values enclosed by parens notation, to allow for comparison of arrays. Equality for ordered collections would be defined as: same number of items all items in the array, at the same index, compare as equal Equality for unordered collections would be defined as: same number of items all items in the array, after the server enforcing the same ordering on both collections, compare as equal, at the same index See also ODATA-1075