Enable dynamic-dataflow to operate on variable-sized operands

[bmitchell-lts]

When dynamic-dataflow analyzes an instruction that operates on large operands, the results from those operations are generally missing. This is because dynamic-dataflow attempts to reinterpret the p-code associated with each instruction during its analysis and is only able to interpret operands that can lower to primitive integers (i.e. up to 128-bit integers).

This feature tracks the integration of big integer logical/arithmetic algorithms into dynamic-dataflow. This requires a significant overhaul for how values and indices are represented internally and may have follow-on effects to the format of artifacts produced by dynamic-dataflow as well as database schemas.

Additional commentary and examples to be posted.