Line number markers for Static DSL generative functions

[georgematheos]

Currently debugging static DSL generative functions can be quite difficult, since the compiled static DSL code don't include any line number markers from the original code, which makes it difficult to understand where errors are arising. It would be great if the static DSL compiler could insert the line number markers from the original code into the compiled code for update, generate, etc., so error messages could do a better job pointing to the source code.