Phase 1 of repo reorg (#719)

* Remove unneeded script

* Rename Substrate Demo -> Substrate

* Rename demo -> node

* Build wasm from last rename.

* Merge ed25519 into substrate-primitives

* Minor tweak

* Rename substrate -> core

* Move substrate-runtime-support to core/runtime/support

* Rename/move substrate-runtime-version

* Move codec up a level

* Rename substrate-codec -> parity-codec

* Move environmental up a level

* Move pwasm-* up to top, ready for removal

* Remove requirement of s-r-support from s-r-primitives

* Move core/runtime/primitives into core/runtime-primitives

* Remove s-r-support dep from s-r-version

* Remove dep of s-r-support from bft

* Remove dep of s-r-support from node/consensus

* Sever all other core deps from s-r-support

* Forgot the no_std directive

* Rename non-SRML modules to sr-* to avoid match clashes

* Move runtime/* to srml/*

* Rename substrate-runtime-* -> srml-*

* Move srml to top-level

substrate/scripts/build-demos.sh

@@ -1,28 +0,0 @@
-#!/usr/bin/env bash
-
-# This script assumes that all pre-requisites are installed.
-
-set -e
-
-PROJECT_ROOT=`git rev-parse --show-toplevel`
-source `dirname "$0"`/common.sh
-
-export CARGO_INCREMENTAL=0
-
-# Save current directory.
-pushd .
-
-cd $ROOT
-
-for DEMO in "${DEMOS[@]}"
-do
-  echo "*** Building wasm binaries in $DEMO"
-  cd "$PROJECT_ROOT/$DEMO"
-
-  ./build.sh
-
-  cd - >> /dev/null
-done
-
-# Restore initial directory.
-popd

substrate/scripts/common.sh

@@ -4,12 +4,9 @@ ROOT=`dirname "$0"`
 
 # A list of directories which contain wasm projects.
 SRCS=(
-	"substrate/executor/wasm"
-)
-
-DEMOS=(
-	"demo/runtime/wasm"
-	"substrate/test-runtime/wasm"
+	"core/executor/wasm"
+	"node/runtime/wasm"
+	"core/test-runtime/wasm"
 )
 
 # Make pushd/popd silent.