Merge pull request #1280 from zeha/allow-from-api-fix

Fix JSON API to return an object for /config/allow-from
Recursor Set Build-Depends in auto-built .dsc file

Useful for people working from git, yet still needing to deploy to
wheezy for testing.
Merge pull request #1281 from zeha/recursor-deb-minor-improvement

Recursor Set Build-Depends in auto-built .dsc file
RHEL/CentOS spec files to build-scripts