64 bit compatibility

[Urkle]

As has been discussed on several threads before.. Due to newton and angelcode no 64bit version can be produced.

LibNewton (version 1.53) is 32bit only. the 2.0 "in development" release has a 64bit port, but the HPL1 Engine would need to have the newton portions ported to it.. (there is actually a branch in the git repository where another user has contributed his "first" attempt at it).

Also the angelscript scripting library needs to be updated to a newer version that supports 64bit.

Once those two components are "updated" , then a native 64bit version can be made for Linux.. otherwise you have to build a 32bit exectable.