Added syck gem for ruby 2.0 and yaml_migrator to
transform yamls between different serializers
e.g. syck to psych
Updated yaml_migrator to only select yaml columns
Migrated serialized yaml in core tables from syck to psych
added changed Gemfile.lock
Merge pull request #641 from opf/feature/rails3_migrate_serialized_yaml

Feature/rails3 migrate serialized yaml