[hxcpp][snowkit][linc] Box2D port

[Daniel Uranga]

Im making a linc[1] port of Box2d[2]. A simple test works ok [3], with
only one issue, when linking on Windows using Visual Studio 2015 I get
hundreds of warnings "LNK4042: object specified more than once; extras
ignored".
The test project compiles and runs correctly, but I would like to
avoid the warnings.
Anyone have an idea? @Hugh? @Sven?

1: http://snowkit.github.io/linc/
2: https://github.com/DanielUranga/box2d-linc
3: https://github.com/DanielUranga/box2d-linc/tree/master/test/openfl