788a9d0129
Topologically, this isn't really much of a change. We just moved the
flcksum -> lfs.pcksum and made the internal API a bit better.
But hey, a better internal API at ~no cost is always a good thing:
code stack lfs_t
before: 33868 2880 212
after: 33856 (-0.0%) 2880 (+0.0%) 216 (+1.9%)