#4 Alternative back-end example

[Mike C. Fletcher]

Would be useful to have at least one alternative back
end module, for instance one using the Earley
algorithm. This would require replacing generator and
objectgenerator with something which would generate the
parsing structures required for the alternative parsing
engine.

The engine will need to return the same basic data
structure as the current engine, of course.

Any code using prebuilt (i.e. mx.TextTools) tables will
fail, but that is to be expected. Everything else
should just simply work.