reenabled name lookup of supporting individual element inheritance.
Still need to deal with finding in type if not present in
implementation.
stuff that deals with inheritance of error model declarations from the
component extends hierarchy.
Fixed resolution of state after rearranging containment path code.
initial pass at error propagation on fg.
Needs a work over on name resolution.
Fixed up name resolver to handle feature refs.
At the moment handles only one id.
Fixed up merge.