run `make' then "mono MHashTest.exe"

The idea behind this is to see if you can save pinvoke costs to the same data structures in a mixed language environment by having (unsafe, of course) C# code which mirrors the C code and touches the same memory in the same way.

It appears to be very easy dealing with the actual hashtable memory (MHashNode, etc), but we run into the expected problems with the marshaling of keys and values. In the case of g_direct_hash (which we use extensively in moonlight), the keys are easily handled -- they're just IntPtrs and never marshaled. Dealing with values is a little tougher. In Moonlight they're always of type Mono.Value, which again should be something we can handle, but in the general case it'll require another layer and more code on both sides. GCHandles, perhaps. Yuck.