examples/ncd_parser_test: Handle variables in values.
ncd: Add parser support for function invocations and parentheses in value expressions.
ncd: NCDVal: Micro refactoring.
ncd: NCDVal: Use maxalign to ensure alignment of fastbuf.
This will allow moving lots of implementation details out of the header.
ncd: NCDVal: Move lots of implementation details out of the header.
Add convenience Nix expression for building.
Relying on the existing badvpn expression in nixpkgs.
ncd: NCDInterpProcess: Be more informative when encountering unsupported expression types.
ncd: NCDInterpProcess: Move struct to c file.
ncd: Refactoring to support upcoming function calls.
ncd: Fix crash with num_multiply(..., "0").