bug#23043: breakpoints not honoured by guile master

I think that this was related to an earlier bug where the traps weren't being tripped at all, which has been fixed (trace also wasn't working). If I'm wrong, please reopen!

bug#23043: breakpoints not honoured by guile master

Hi, I am have resurrected my GNU-style file-line-column patch to make Emacs's GUD work with Guile. It only handles debug prompts at the moment, I'm working on backtraces. However, breakpoints do not work for me. Using the attached file, I set breakpoints in two ways, the debugger does not stop.