- correct compilation issue with std::deque requireing copy constructor under GCC 4.4
- correct compilation issue with std::deque requireing copy constructor under GCC 4.4

mhellmic/davix,mhellmic/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,EricKTCheung/davix,EricKTCheung/davix,EricKTCheung/davix,mhellmic/davix,mhellmic/davix,cern-it-sdc-id/davix,EricKTCheung/davix