Merge branch 'master' of git://scm.dev.nokia.troll.no/qt/qtbase-earth-staging

* 'master' of git://scm.dev.nokia.troll.no/qt/qtbase-earth-staging:
  Skip test on MacOS due to problems with corewlan plugin
  Fix QNetworkConfigurationManager usage outside main thread first
  Update QTBUG-17223 for Qt 4.8
  fix tst_qnetworkreply::httpProxyCommands autotest
  Send User-Agent from the network request in http proxy CONNECT command
  Add autotests for configuration dependent network proxies
  Fix QNetworkReplyImpl error handling
  Enable per network configuration proxy settings in QNetworkAccessManager
  Allow a network configuration to be included in a proxy query
  Fix error handling in write for socks socket engine