forking off the platform2 migration request from  issue 878440  (comment #3):

at this point, we have to ask ourselves who the target market for this project ?  do we want to keep it standalone so non-CrOS people can use it ?  do we really think there are that many people out there doing so ?  i'd point out this repo has seen like 3 CLs since 2013, one of which was fixing libc++ compatibility issues, and no outside contributions.  maybe it's a "stable" enough codebase that, for people outside of CrOS, they can just use this old copy.

so if we just accept that no one outside of CrOS cares for updates:
- lets merge this project into platform2
- convert the small amount of C code to C++
- switch from custom utility/library code to libchrome (e.g. all the hashing logic)

outside of the `verity` program, installer/ is the only user of the dm-bht library.  so converting this stuff to C++ shouldn't be a big deal.