Ledger integration (#931)

Merges the keybase and Ledger code from go-crypto (which is no more) into the SDK
Adds support for Ledger into gaiacli
Cherry-picks updated error handling from #1158

x/slashing/app_test.go

@@ -11,8 +11,8 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/cosmos/cosmos-sdk/x/stake"
-	abci "github.com/tendermint/abci/types"
-	crypto "github.com/tendermint/go-crypto"
+	abci "github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/crypto"
 )
 
 var (

x/slashing/keeper.go

@@ -5,7 +5,7 @@ import (
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/wire"
-	crypto "github.com/tendermint/go-crypto"
+	"github.com/tendermint/tendermint/crypto"
 )
 
 // Keeper of the slashing store

x/slashing/keeper_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	abci "github.com/tendermint/abci/types"
+	abci "github.com/tendermint/tendermint/abci/types"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/x/stake"

x/slashing/test_common.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	abci "github.com/tendermint/abci/types"
-	crypto "github.com/tendermint/go-crypto"
+	abci "github.com/tendermint/tendermint/abci/types"
+	"github.com/tendermint/tendermint/crypto"
 	dbm "github.com/tendermint/tmlibs/db"
 	"github.com/tendermint/tmlibs/log"
 

x/slashing/tick.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
-	abci "github.com/tendermint/abci/types"
+	abci "github.com/tendermint/tendermint/abci/types"
 	tmtypes "github.com/tendermint/tendermint/types"
 )
 

x/slashing/tick_test.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	abci "github.com/tendermint/abci/types"
+	abci "github.com/tendermint/tendermint/abci/types"
 	tmtypes "github.com/tendermint/tendermint/types"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"