Compilation error in develop branch

[AntoineMazuyer]

Describe the bug
Compilation error

/home/amazuyer/dev/geosx/GEOSX/src/components/core/src/managers/BoundaryConditions/BoundaryConditionBase.hpp:658:44: error: cannot call member function ‘void geosx::BoundaryConditionBase::ApplyBoundaryConditionToSystem(geosx::set<long int>&, geosx::real64, geosx::dataRepository::ManagedGroup*, const globalIndex_array&, const integer&, geosx::systemSolverInterface::EpetraBlockSystem*, geosx::systemSolverInterface::BlockIDs, LAMBDA&&) const [with BC_OP = geosx::BcEqual; LAMBDA = geosx::BoundaryConditionBase::ApplyBoundaryConditionToSystem(geosx::set<long int>&, geosx::real64, geosx::dataRepository::ManagedGroup*, const string&, const string&, const integer&, geosx::systemSolverInterface::EpetraBlockSystem*, geosx::systemSolverInterface::BlockIDs) const::<lambda(auto:5)> [with auto:5 = multidimensionalArray::ManagedArray<int, 1, long int>; BC_OP = geosx::BcEqual]::<lambda(geosx::localIndex)>; geosx::set<long int> = SortedArray<long int, long int>; geosx::real64 = double; geosx::globalIndex_array = multidimensionalArray::ManagedArray<long long int, 1, long int>; geosx::integer = int]’ without object
       ApplyBoundaryConditionToSystem<BC_OP>( targetSet,
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
                                              time,
                                              ~~~~~
                                              dataGroup,
                                              ~~~~~~~~~~
                                              dofMap,
                                              ~~~~~~~
                                              dofDim,
                                              ~~~~~~~
                                              blockSystem,
                                              ~~~~~~~~~~~~
                                              blockID,
                                              ~~~~~~~~
                                              [&]( localIndex const a )->real64
                                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       {
       ~                                     
         return static_cast<real64>(rtTypes::value( field[a], component ));
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       });
       ~~  

To Reproduce
Clone develop branch try to configure/compile it with gcc 6.3

Expected behavior
Should compile

[AntoineMazuyer]

I propose a fix in #139

[klevzoff]

By the way, this is a gcc bug that was fixed in 6.4: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61636
But we should still merge this workaround for more compiler support