Initial work on adding a LINQ syntax parser into the language. (WIP)
Continuing work on this.  It's now possible to parse LINQ expressions without the LINQ pseudo-keywords stomping on the rest of the available identifier names, and to declare expressions in booish and debug them.  Working on the transformations now.
Realized that I don't need types if the compiler can infer them. That makes this much simpler.
Moved query expression transformer to the macro expansion phase of the pipeline and removed all unnecessary type-related code.
SELECT, WHERE, ORDERBY and CAST transformations are working correctly now.  Still poking at transparent identifiers.