Buffer Hashes / Compressed buffer dumps

## Observed Behavior

If one enables buffer dumps for multiple (may be all) buffers, the dumps occupy large space, running into several giga bytes. The need for such a large disk space can rule out performing such a run on many systems. Compressing the dumped files after the entire run is also impractical.

## Desired Behavior

1. If it is possible to output buffer hashes (e.g. sha512) as an independently selectable knob, it can provide a way to collect a low-footprint signature of all the buffers.
2. Buffer Compression as an independently selectable knob will provide another equally useful way to collect a medium-footprint signature of all the buffers.
## Steps to Reproduce

Execute an OpenCL application under CLIntercept control, enabling all buffer dumps