Tdb 0.6.1 - trivial database bindings for Ruby

TDB is much like other DBM implementations, except it allows concurrent
writer processes. TDB was initially developed for Samba, but is used by
other projects as well. These Ruby bindings allow Ruby apps to read and
write to the same databases used by Samba!

Changes:

First release in a few years, many updates

Added siphash24 and some murmur3 variants as option. Many internal
updates and compatibility fixes for future Ruby versions. License is
now LGPLv2.1+ (from LGPLv3+) for compatibility with GPLv2-only software.

See “git log” for full details.