* ENT-319 Enclave to help test Intel signing key
* Update build files to allow for release builds
* Strip debug information from release binaries
* Move sign_helper and update references
* Remove paragraph from README
* Two dev modes (simulation and HSM)
* Update make files to take mode and single build directory
* Update reference to self-sign key
* Build script: from_clean.sh
* Fix bad ref to docker-minimal
