Use constexpr in KinFu and KinFu large scale apps

[SunBlack]

During replacing min by std::min I got following compile error:

/media/sf_pcl/gpu/kinfu/src/cuda/tsdf_volume.cu(167): error: no instance of overloaded function "std::min" matches the argument list
            argument types are: (int, enum pcl::device::Tsdf::<unnamed>)

As marco defines are not recommend anymore, since constexpr exists, I decided to modernize this code a bit, so std::min(...) should work without using std::min<int>(...)