This is branch with the new GA CI

It has the .circleci CI stuff as well
for comparison purposes.

.circleci/create-hash.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# get the hash of riscv-tools
+
+# turn echo on and error on earliest command
+set -ex
+set -o pipefail
+
+# get shared variables
+SCRIPT_DIR="$( cd "$( dirname "$0" )" && pwd )"
+source $SCRIPT_DIR/defaults.sh
+
+# enter bhd repo
+cd $LOCAL_CHIPYARD_DIR
+
+# Use normalized output of git-submodule status as hashfile
+for tools in 'riscv-tools' 'esp-tools' ; do
+    git submodule status "toolchains/${tools}" 'toolchains/libgloss' 'toolchains/qemu' |
+    while read -r line ; do
+        echo "${line#[!0-9a-f]}"
+    done > "${HOME}/${tools}.hash"
+done
+echo "Hashfile for riscv-tools and esp-tools created in $HOME"