Revision of #531

[jslee02]

This pull request

• merges master branch into [Preliminary] Nodes and Addons #531 (should pass appveyor tests)
• revises as discussed in [Preliminary] Nodes and Addons #531

[jslee02]

A bug of VS2015 was reported pertain to constexpr with functions pointer (see bug 1378031). The blog post says it's fixed, but it seems not at least for our case. Here is the error message:

[00:00:50] C:\projects\dart\dart/dynamics/Addon.h(63): error C2131: expression did not evaluate to a constant (compiling source file C:\projects\dart\dart\dynamics\BallJoint.cpp) [C:\projects\dart\build\dart\dart-core.vcxproj]

[mxgrey]

Is it possible that Appveyor doesn't have the latest updates for VS2015? Or have we found an extra-special case of the constexpr bug?

[jslee02]

The compilation errors are occurring with my VS2015, which is the most recent version with Update 1 (14.0.2478.2), as well. AppVeyor's one is 14.0.24720.0.

I can't say it's a VS2015 bug definitely, but it seems so for now.

[jslee02]

Merging even VS2015 can't build this.