Blender Git Loki

These are changes necessary for building with msvc in a near future.
Just making sure memory is always allocated and freed in the same
binary object, which seems to be mandatory on msvc if you don't have
the comercial version. If you are using this code you need to
syncronize with yafray cvs also, or it won't work. Binaries for os x
are updated in the link I gave in my last commit.