export configuration structure files.
configuration tool has changed its name into grapes_config and it's now available as a public interface of the GRAPES library
Added put counter to mysql cloud helper
Added support for get_from_cloud_default which return a default value if key is not present
Fixed thread unsafe operations in net_helper
better specified the completion criteria of recv_form_cloud
Bug fix: mysql/libs3 delegate helper always reported empty data after a successful recv operation