changing game_exists variable name to make the logic more clear

Fixed Abi tables.name attribute, fix https://github.com/EOSIO/eos/iss…

Fix typo

change from "thow" to "throw".

Allow construction of fixed_key with arrays of different word sizes

Docker re-add mongo

Minor fix to exchange contract

Fixes for Docker builds

Add support for mongo-cxx-driver stable release 3.2

Addition of Centos & Updated Readme

Fix tests

API: get_block ref_block_prefix needs to return uint32 (not a unit64)…

fix eosiocpp so external contracts can be built

Fix linkage of net_api_plugin

Install the libraries and link against them like done in internal eosio cmakes

Fix system account name for EOS token

Use the same as in eosio.system
https://github.com/EOSIO/eos/blob/317606da15730c3c413d9b7ed8507934c14ae320/contracts/eosio.system/eosio.system.cpp#L15

fix eosiod tests by swapping order of generic_currency's account fields to match balance serialization assumption in chain_plugin

update exchange, implement find for secondary index

Updated multi_index and new C DB API

Remove uint256 dependence from simpledb and abi_tests for now. Need to
later add support for key256 in ABI generation?

All tests except api_tests/transaction_test pass.