64-bit and Linux support are much sought after features for OpenDSS. One way to achieve this would be translate the code into Java. It just so happens that I spent some time earlier this year doing this. To give an idea of what it would look like I have attached the Java code for the GeneratorObj class. The rest of the classes have been translated too, but the source has not been made available while I decide what to do with it.
However, I have started work on translating KLU to Java and the source is available under the LGPL here:
http://github.com/rwl/JKLU
http://github.com/rwl/COLAMDJ
http://github.com/rwl/BTFJ
http://github.com/rwl/AMDJ
If Java does not suit your fancy, auto translation of Java to C# is well developed. Translation to Python less so:
http://pypi.python.org/pypi/pydss
Switching languages might help to attract more developers and encourage integration with other open source smart grid projects.
OpenDSS GeneratorObj implemented in Java