formatting
fix bug of not using proper erts version if erts path is used
Merge pull request #276 from tsloughter/user_erts

Fixes for user defining erts to include in release
check for CODE_LOADING_MODE in extended bin script, default to 'embedded'
render overlay filenames for tar archive
Merge pull request #282 from irccloud/code_loading_mode_env

use CODE_LOADING_MODE in extended bin script
tag providers repo
Merge pull request #281 from tsloughter/overlays_archive

render overlay filenames for tar archive