The build-and-deploy scripts run scripts and config from the local
checkout but build source files from the tip of the remote branch, so
a stale or wrong-branch checkout could silently build with the wrong
Gecko version or omni patches.
The connector is now a Safari web extension, so the bundled appex is a
static wrapper stub whose placeholder resources are replaced at build
time with a connector build via $SAFARI_EXT_RESOURCES. The stub only
needs to be rebuilt when the native wrapper project changes, not for
connector releases.
Split build_and_deploy into build_for_deploy (builds, uploads to S3,
rsyncs manifests) and a deploy script in client-downloads (updates
updates JSON, updates incrementals, runs deploy command).
Release scripts support -b flag for build-only (deploy later manually).
Beta/dev/test scripts build and deploy automatically via SSH.
Move incrementals files from S3 to deploy server. Update DEPLOY_PATH to
root of client-downloads so manifests and deploy script paths are
derived from it.
