Exclusion list for CDB symbol download

I have set up QtCreator to automatically download and cache PDB files from the Microsoft symbol server for usage with CDB. However, symbols for some system DLLs sometimes appear to be missing and apparently it takes a very long time for the symbol server to respond to such a request (up to half a minute).

In Visual Studio I can circumvent this problem by adding the problematic DLLs to an exclusion list, so that their symbols will only be retrieved manually. To be able to work productively with QtCreator, I currently have to disable automatic symbol downloading entirely.

The following two improvements would be nice to have in QtCreator:

• Provided visual feedback that debug symbols are being retrieved. Currently it looks like the application or debugger is simply frozen. Visual Studio always shows which DLL's symbols are being retrieved.
• Provide an exclusion list in the CDB settings for modules whose symbols should not be retrieved.