Added support for arbitrary OID's for tagsets, schemas and attribute sets.

Added support for arbitrary OID's for tagsets, schemas and attribute sets.
Added support for multiple attribute set references and tagset references
from an abstract syntax file.
Fixed many bad logs-calls in routines that read the various
specifications regarding data1 (*.abs,*.att,...) and made the messages
consistent whenever possible.
Added extra 'lineno' argument to function readconf_line.