Clean up state on patchwork

[Joseph Myers]

I'd also like to encourage maintainers (a) to help clean up the state of 
patches submitted by occasional contributors with only a few patches 
listed in patchwork, and (b) to ping their own patches that are pending 
review (if it's been a while, then consider retesting and resubmitting, 
marking the old patch as superseded - in particular, definitely do that 
for any patches last submitted before we started using patchwork in March 
2014).

Frequent contributors can be expected to deal with keeping state for their 
own patches clean (and with pinging etc.), but this shouldn't be required 
for infrequent contributors; the community should collectively be able to 
deal with those patches.

-- 
Joseph S. Myers
joseph@codesourcery.com