I'd like to update the devel/yaml-cpp port to the latest version.
The new version dropped the dependency on boost and changed some internal logic.
While testing I discovered games/openxcom and net-mgmt/openbmp need fixes.
openxcom needs adding USE_CXXSTD=c++11 because yaml-cpp includes now require that. I also added missing cmath includes in a few files, I think yaml-cpp includes don't pull that in anymore in those cases.
openbmp lacks an explicit dependency on boost-libs. It was not failing before since yaml-cpp was pulling that in.
Can you review these changes? Thanks.