hgweb: send Content-Length 0 for zero length response Before, Content-Length wasn't sent for 0 length responses. Now it is. This could in principle prevent some unnecessary http connection close.

archival: tarit should never close the dest passed to it Some archive types closed the open file passed to it, some didn't. This could cause either missing or duplicate close and cause problems in hgweb. The fix in 14f3795a5ed7 should only have closed the compressors and archivers - not the underlying file itself if no compressor is used.

mq: checktoppatch should only check if p1 is qtip There is no way qtip in p2 could be used for anything, and there is thus no reason to check and accept it.