@feelpp/feelpp update issue #142
Boost 1.53 required some changes
 - fixed change in shared_ptr<> interface (pointer and value_type are not
   available anymore, use element_type* and element_type respectively instead)
 - BOOST_NO_SCOPED_ENUMS is deprecated, use now BOOST_NO_CXX11_SCOPED_ENUMS as
   of boost 1.51, this fixes linkage problem with boost::filesystem
up
Merge branch 'develop' of https://github.com/feelpp/feelpp into develop