Move path and link_name related functions and regex patterns to a new soc/logic/path_linkname.py module, and fix all dependencies. path/link_name functionality is becoming the generic way to identify entities in the Datastore in a URL-compatible way.

class BaseCreation(object):
    """
    This class encapsulates all backend-specific differences that pertain to
    database *creation*, such as the column types to use for particular Django
    Fields.
    """
    pass