Work around crash due to obsolete API's in some unit tests.
Work around crash due to obsolete API's in some unit tests.

In the long run, the unit tests need to be cleaned up, and
the obsolete API should be removed. But for now... skip this.

AmeBel/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,AmeBel/atomspace,rTreutlein/atomspace,AmeBel/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,misgeatgit/atomspace,AmeBel/atomspace,misgeatgit/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,rTreutlein/atomspace,AmeBel/atomspace