libpolkit-qt-1-dev 0.112.0-0ubuntu4 (amd64 binary) in ubuntu wily

 PolicyKit is an application-level toolkit for defining and handling the policy
 that allows unprivileged processes to speak to privileged processes.
 .
 It is a framework for centralizing the decision making process with respect to
 granting access to privileged operations (like calling the HAL Mount() method)
 for unprivileged (desktop) applications.
 .
 libpolkit-qt-1 provides convenience classes and methods for Qt/KDE
 applications that want to use PolicyKit-1.
 .
 This package contains the development libraries and headers.