Qt clobbers the cache-control headers set by WebCore when CacheLoadControlAttribute == QNetworkRequest::AlwaysNetwork
http://bugreports.qt.nokia.com/browse/QTBUG-13564
http://qt.gitorious.org/qt/qt/merge_requests/2472
Merged into Qt, thanks!
Need to unskip http/tests/misc/refresh-headers.php when buildbot moves to 4.8
Unskipped. Patch landed in r99697: http://trac.webkit.org/changeset/99697