[whatwg] WA1: conformance checker conformance requirements

[fantasai]

Ian Hickson wrote:
> On Tue, 19 Jul 2005, fantasai wrote:
> 
>>Please tell me you don't expect conformance checkers to check for 
>>potentially invalid JavaScript output...
> 
> Obviously not, as that is mathematically impossible.

Then, please make that exception explicit in the conformance
requirements section. Currently the only normatively allowed
exception is for "interpretation of the author's intent" --
and checking script output doesn't fall into that category.

~fantasai