Merge pull request #142 from linas/link-grammar

Link grammar
Merge pull request #143 from linas/link-grammar

atom types are declared by the users of atom types.
Merge pull request #144 from linas/link-grammar

Hush Python build errors
More atom-type cleanup; get Ubigraph to build
Merge pull request #145 from linas/atom-types

More atom-type cleanup; get Ubigraph to build
Merge pull request #146 from linas/link-grammar

Link grammar parser
Do not complain if a module is already loaded.
fix test so that it initializes correctly