Draft: Update configure.ac to specify NVCC's std to c++11, will fix build on CIT.
Ozstar's g++/gcc version is 6.4.0, which uses -std=c++11 as default, but CIT uses 4.8.5 which uses -std=c++03 as default. This std does not include constexpr and so the build will break on CIT without this change.
Edited by Luke Davis