Usage:
default is lmdb for blockchain branch:
$ make release
same as:
$ DATABASE=lmdb make release
for original in-memory implementation:
$ DATABASE=memory make release
hard-coded config folder, hard-coded BlockchainDB subclass.
Needs finessing, but should be testable this way.
update for rebase (warptangent 2015-01-04)
fix conflicts with upstream CMakeLists.txt files
src/CMakeLists.txt (edit original commit)
src/blockchain_converter/CMakeLists.txt (add)