sample msxml3 implementation

[Mike McCormack]

Vijay Kiran Kamuju wrote:

> I thought i have some suggestions in implementing the msxml3.dll
> I am sending an old sample stub implemenation (incomplete).
> I am rewriting the msxml3.dll
> need some suggestions.

Some suggestions:

* get rid of the remaining C++ stuff in Makefile.in
* add an LGPL copyright header to the .c and .h files
* there's no need to print both the iface and This pointers in your 
TRACEs, as they'll be the same.

Mike