How to perform template substitution in the clang library

Hi all,

Seems my question hit during the middle of a renaming frenzy.
The question probably fell on the way side.

I would be ever so grateful if someone could come up with a
good direction regarding this.

Stackoverflow I must admit is doing quite badly!
http://stackoverflow.com/questions/13438615/how-to-perform-template-substitution-in-the-clang-library

Kind regards
Stewart