open pipes in overlapped mode also on the client side
open pipes in overlapped mode also on the client side

otherwise PeekNamedPipe() may block in threaded environments.

Reviewed-by: thiago
(cherry picked from commit 4948f4b188c6aa40e628d74d6d6fce747ee535bd)

radekp/qt,radekp/qt,igor-sfdc/qt-wk,radekp/qt,pruiz/wkhtmltopdf-qt,KDE/qt,igor-sfdc/qt-wk,pruiz/wkhtmltopdf-qt,igor-sfdc/qt-wk,radekp/qt,radekp/qt,radekp/qt,pruiz/wkhtmltopdf-qt,RLovelett/qt,igor-sfdc/qt-wk,pruiz/wkhtmltopdf-qt,KDE/qt,pruiz/wkhtmltopdf-qt,KDE/qt,pruiz/wkhtmltopdf-qt,KDE/qt,igor-sfdc/qt-wk,pruiz/wkhtmltopdf-qt,RLovelett/qt,RLovelett/qt,radekp/qt,pruiz/wkhtmltopdf-qt,igor-sfdc/qt-wk,RLovelett/qt,RLovelett/qt,KDE/qt,RLovelett/qt,radekp/qt,KDE/qt,igor-sfdc/qt-wk,igor-sfdc/qt-wk,KDE/qt,KDE/qt,igor-sfdc/qt-wk,RLovelett/qt,RLovelett/qt,radekp/qt,igor-sfdc/qt-wk,RLovelett/qt,RLovelett/qt,igor-sfdc/qt-wk,pruiz/wkhtmltopdf-qt,radekp/qt,RLovelett/qt,pruiz/wkhtmltopdf-qt,pruiz/wkhtmltopdf-qt