Merge pull request #9 from Sabayon/develop

New Features and Updates

sark-localbuild: Fix typo on merge

Merge pull request #7 from Sabayon/develop

Add new features and review

Merge pull request #5 from Sabayon/develop

Introduce some features to use on ARM with Sabayon overlay profiles

sark-functions.sh: fix when no keys in yaml (when set -e is in effect)

Generate repository metadata in localbuild

sark-localbuild: Add SAB_BUILDER env

sark-localbuild: Fix integration with pkg-checker and new eit options

Cleanup and make possible to disable create repo phase

Add default local overlay dir