class=reftest-wait

Hi,

We have this documented on the CSSWG wiki [1] and I'm not sure if or how it's actually used.  I see 35 tests in the suite that have it [2].  I understand theoretically what it's used for,  but it seems the missing piece of information here is that an external harness running automated reftests would need to know about it to honor it, correct?  In porting this to the new W3C test documentation suite, I'd like make this complete or remove it if it's irrelevant.

Thanks,
-Rebecca

[1] http://wiki.csswg.org/test/reftest
[2] http://test.csswg.org/shepherd/search/content/reftest-wait/