Merge change 25938 into eclair

        if (mWifiHandler == null) return false;

        synchronized (mWifiHandler) {

            // caller may not have WAKE_LOCK permission - it's not required here

            long ident = Binder.clearCallingIdentity();

            sWakeLock.acquire();

            Binder.restoreCallingIdentity(ident);

            mLastEnableUid = Binder.getCallingUid();

            // set a flag if the user is enabling Wifi while in airplane mode

            mAirplaneModeOverwridden = (enable && isAirplaneModeOn() && isAirplaneToggleable());