Tests: Remove some log-cluttering from test_stateserver setup.
uint128: Fix bit-shifting for shifts between 64 and 127.
Note: 128 would have undefined behavior in C/C++ standard.
uint128: Data should be little-endian on little-endian systems.
Tests: Use little-endian packing and unpacking for 128bit channels.
Tests: Use << ZONE_SIZE_BITS instead of << 32 in tests.