* Migrate main node store to LMDB
In preparation to using LMDB as a wallet database, migrate the
node db. There's no point in having 2 key-value stores.
In addition LMDB provides a few advantages as a node db, namely a
much faster build (compared to RocksDb), lesser dependencies and
transactions.
* Migrated p2p store to lmdb, stuff compiles
* More fixes, chain tests starting to pass
* Fixed txhashset rollback messing with block save and general batch delimitation. Chain tests passing.
* rustfmt
* LMDB max map size of 10MB isn't really workable. Half TB seems reasonable.
* Fix wallet tests
* Rather crucial commit was missing
* rustfmt
* Fixing new merged tests following lmdb changes
* rustfmt
* * Make txhashset validation read-only on fast sync to avoid having
a really long open transaction.
* Fix deadlock in new block processing, batch should always be
created within a txhashset lock (when they interact).
* Comment about batch and txhashset interlacing
* Fix store tests to use batch
* Externalize wallet config and seed
* Converted direct read access to file outputs map to an iterator
* Cleaned up and simplified wallet Backend trait:
* No more direct mutable access to internal structures (HashMap)
* Batch interface for all writes
* Remove unneeded read wrapper (read_wallet)
* rustfmt
* First (incomplete) pass at wallet LMDB backend
* Progressing on lmdb backent iml
* Added batch impl for LMDB wallet backend. Pretty much done with it, but not sure how to deal with commit (owned).
* rustfmt
* Wrapping LMDB batch around a refcell to work around borrow rules
* Compilation up to grin chain
* Add kernel commitments sum and kernel and output MMR sizes to block header
* Sum a block without including previous sums, cleanup. Blocks are now summed and validated based on their own totals and not the totals since genesis. This allows to get rid of BlockSum and simplified the setting of a new block's roots, kernel sum and MMR sizes. Fixes#116
* Additional kernel MMR validation to check all prior header roots successively
* Wallet tests fix
* move http calls out from libwallet internal
* rustfmt
* start to think about wallet communication traits
* rustfmt
* start of factoring out wallet client trait
* rustfmt
* move node_url trait fn into walletclient
* rustfmt
* comms factored out (with exception of wallet restore)
* rustfmt
* fix test
* rustfmt
* further test fix
* move checker and rename to updater
* rustfmt
* complete checker/updater move
* rustfmt
* move libwallet error into separate file
* rustfmt
* starting to sort our error types
* updating errors in libtx and libwallet
* rustfmt
* factor out error type
* rustfmt
* compiling, errors split into libwallet and wallet errors
* rustfmt
* changing user error reporting to new format
* rustfmt
* clean up error types
* clean up error types
* move restore into libwallet
* rustfmt
* remove context object from aggsig and transaction libs
* fix to aggsig, and remove unnecessary warnings
* put tx_fee function into libwallet::transaction
* Error cleanup, and creating libwallet error type
* remove some unwraps
* checker bug
* ensure transaction tests checks sender's wallet
* beginning to refactor keychain into wallet lib
* rustfmt
* more refactor of aggsig lib, simplify aggsig context manager, hold instance statically for now
* clean some warnings
* clean some warnings
* fix wallet send test a bit
* fix core tests, move wallet dependent tests into integration tests
* repair chain tests
* refactor/fix pool tests
* fix wallet tests, moved from keychain
* add wallet tests
