[block] read and write refs defined BLOCK_SIZE
[data-structures] array_block
add fixme
rename NoOpRefCounter -> no_op_ref_counter
Pull ref_counter out of btree.h
Updates to array_block
Array data structure
bitset
cache tools wip
rename some parameters
cache tools wip
cache tools work
Some trivial cucumber tests
cache_check work
Add a script to retrieve and build gmock.
gmock stub
Convert buffer_t to gmock.
Put build dependencies in for gmock
Quieten down the build
Move array_t to gmock