Rename: primitives/sr-std -> primitives/sp-std (#4327)

* primitives/sr-std -> primitives/std

* fix

* fix conflict

* rstd -> sp-std

* git mv

* fix review

* fix merge

substrate/primitives/sr-sandbox/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 wasmi = { version = "0.6.2", optional = true }
 primitives = { package = "sp-core", path = "../core", default-features = false }
-rstd = { package = "sp-std", path = "../sr-std", default-features = false }
+sp-std = { path = "../std", default-features = false }
 runtime-io = { package = "sp-io", path = "../sr-io", default-features = false }
 codec = { package = "parity-scale-codec", version = "1.0.0", default-features = false }
 
@@ -20,7 +20,7 @@ default = ["std"]
 std = [
 	"wasmi",
 	"primitives/std",
-	"rstd/std",
+	"sp-std/std",
 	"codec/std",
 	"runtime-io/std",
 ]

substrate/primitives/sr-sandbox/src/lib.rs

@@ -38,7 +38,7 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(not(feature = "std"), feature(core_intrinsics))]
 
-use rstd::prelude::*;
+use sp_std::prelude::*;
 
 pub use primitives::sandbox::{TypedValue, ReturnValue, HostError};
 

substrate/primitives/sr-sandbox/with_std.rs

@@ -14,8 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
 
-use rstd::collections::btree_map::BTreeMap;
-use rstd::fmt;
+use sp_std::collections::btree_map::BTreeMap;
+use sp_std::fmt;
 
 use wasmi::{
 	Externals, FuncInstance, FuncRef, GlobalDescriptor, GlobalRef, ImportResolver,

substrate/primitives/sr-sandbox/without_std.rs

@@ -14,14 +14,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Substrate.  If not, see <http://www.gnu.org/licenses/>.
 
-use rstd::{prelude::*, slice, marker, mem, vec, rc::Rc};
+use sp_std::{prelude::*, slice, marker, mem, vec, rc::Rc};
 use codec::{Decode, Encode};
 use primitives::sandbox as sandbox_primitives;
 use super::{Error, TypedValue, ReturnValue, HostFuncType};
 use runtime_io::sandbox;
 
 mod ffi {
-	use rstd::mem;
+	use sp_std::mem;
 	use super::HostFuncType;
 
 	/// Index into the default table that points to a `HostFuncType`.