Rearrange export structure to something a bit more convenient.

substrate/wasm-runtime/build.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 cargo +nightly build --target=wasm32-unknown-unknown --release
-dirs=`find * -maxdepth 0 -type d | grep -v pwasm- | grep -v support`
+dirs=`find * -maxdepth 0 -type d | grep -v pwasm- | grep -v std`
 for i in $dirs
 do
 	if [[ -e $i/Cargo.toml ]]