Remove more boost usage and replace with C++11 equivalents.

[mamoll]

Note: BVH_Model has a copy constructor, so having it derive from boost::noncopyable makes no sense. We can delete the copy assignment operator, if desired.
Only remaining boost usage in include/ and src/ is boost::dynamic_bitset. Use std::vector instead?

[sherm1]

This is great, Mark! I'll try it on Windows.

[sherm1]

Only remaining boost usage in include/ and src/ is boost::dynamic_bitset. Use std::vector instead?

It would be easier if it could be replaced by std::bitset although that requires a compile-time size. However, it looks to me as though it is only used as a specialization of morton_functor, which requires the size to be provided at construction and then doesn't allow that size to be changed dynamically. And then that specialization isn't used in FCL except in a test case, where a constant size is used. The bitset specialization of morton_functor could make bit_num a template argument.

Does anyone know if there is an actual requirement for a dynamically-sized morton code? Jia, do you remember why this is using dynamic_bitset and whether that is required? @panjia1983

[isucan]

+1 for merging!

[sherm1]

Works fine in Windows (64 bit VS 2015, both Release and Debug). I'm seeing:

• boost::dynamic_bitset in broadphase/morton.h

And in test:

• boost::unit_test
• boost::timer
• boost::filesystem
• boost::dynamic_bitset

And nothing else!

Ready to merge this PR.

[sherm1]

This should be std::abs rather than std::fabs.