[SimpleParse] Update to tests, new non-recursive rewrite version

[Mike C. F. <mcf...@ro...>]

Marc-André pointed out that a number of my tests were rejecting 
"correct" results from his engine.  Turns out there was a documented 
feature of the engine (returning the "error position" on whole-match 
failure) that I'd never read about.  I've updated the SimpleParse tests 
to recognise this result as valid, and changed the non-recursive rewrite 
to support the feature.

I've also made the SimpleParse-level test code slightly more robust in 
the face of changing implementations.

Those who downloaded 2.0.0b1 (all none of you ;) ) don't need to upgrade 
unless they care about the upgraded tests.  Sorry about the quick 
update, but I figure no-one had actually gotten around to updating, so 
not a lot of harm done.

Enjoy yourselves,
Mike
_______________________________________
   Mike C. Fletcher
   Why, yes, I am looking for a job...
   http://members.rogers.com/mcfletch/