[RFA/stabs reader] Fix v3 duplicate constructors problem

[Jason Merrill]

>>>>> "Michael" == Michael Elizabeth Chastain <mec@shout.net> writes:

> I would like gdb to demangle different names differently.

Which brings me to a question: Why don't we demangle them differently?
Currently, flag_verbose in cp-demangle.c defaults to 0, so the two
functions are demangled identically.  I think this is wrong, and have
changed flag_verbose to 1 for my own use.  What do other people think?

Jason