Import agfl-3.2 as wip/agfl.

The AGFL formalism for the syntactic description of Natural Languages
has been developed by the Computer Science Department of the Radboud
University of Nijmegen.  It is a formalism in which large context free
grammars can be described in a compact way. AGFLs belong to the family
of two level grammars, along with attribute grammars: a first,
context-free level is augmented with set-valued features for expressing
agreement between parts of speech.

The AGFL parser generation system for Natural Languages generates
efficient parsers from AGFL grammars. It includes a lexicon system
suitable for the large lexica needed in real-life NLP applications.
Add agfl.
First verson that produces a valid package
Remove patch that papers over a problem; martin suggested to remove
it and debug this properly.