Check IoC for custom Connector instances
Pass getBindings through to querybuilder
Database connection to return the read PDO connection if in transaction
Fix lines.
Merge pull request #3268 from anlutro-pull-requests/passthru-getbindings

Pass getBindings through to querybuilder
Merge branch 'connector-ioc' of https://github.com/anlutro-pull-requests/framework into anlutro-pull-requests-connector-ioc
Merge branch '4.1' of github.com:laravel/framework into 4.1
Fix conflicts and merge.