Simplifier tests (was Re: patch applied (testsuite): Add a new category of "eyeball" tests)

[Roman Leshchinskiy]

Don Stewart wrote:
> rl:
>>
>> And so on. I'll try to implement a simple framework. I'm just not sure 
>> if it should be in Haskell, Python or shell?
>>
> 
> Grab the pcre-light regex package? 

Yeah, I'd do it like that but I'm not sure what kind of dependencies we 
want to allow in the ghc testsuite.

Roman