Remove ethcore::common re-export module (#2792)

* no longer export action_params

* remove transaction, header, receipt re-rexports from common

* remove env_info and builtins re-exports from common

* remove everything but util export from common

* replace common usages with util, remove module

* add a prelude module for ethcore-bigint

ethcore/src/json_tests/executive.rs

@@ -15,9 +15,11 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use super::test_common::*;
+use action_params::ActionParams;
 use state::{State, Substate};
 use executive::*;
 use engines::Engine;
+use env_info::EnvInfo;
 use evm;
 use evm::{Schedule, Ext, Factory, Finalize, VMType, ContractCreateResult, MessageCallResult};
 use externalities::*;

ethcore/src/json_tests/state.rs

@@ -17,6 +17,7 @@
 use super::test_common::*;
 use tests::helpers::*;
 use pod_state::{self, PodState};
+use log_entry::LogEntry;
 use ethereum;
 use ethjson;
 

ethcore/src/json_tests/test_common.rs

@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-pub use common::*;
+pub use util::*;
 
 macro_rules! test {
 	($name: expr) => {

ethcore/src/json_tests/transaction.rs

@@ -18,6 +18,7 @@ use super::test_common::*;
 use evm;
 use ethjson;
 use rlp::{UntrustedRlp, View};
+use transaction::{Action, SignedTransaction};
 
 fn do_json_test(json_data: &[u8]) -> Vec<String> {
 	let tests = ethjson::transaction::Test::load(json_data).unwrap();