Here is a new API cross-reference for the libclang API, generated with Synopsis (using a libclang backend):
http://synopsis.fresco.org/libclang/
This version exclusively focuses on the API itself (and thus doesn't contain quite as much clutter as the previous version I published, which parsed and cross-referenced headers and source files). This version also contains substantial improvements to the comment processing.
Again, I'd welcome any help in making further progress !
Stefan