Re: [RFA] More C++ v3 tweaks

[Michael Elizabeth Chastain <mec at shout dot net>]

This patch is approved for both HEAD and gdb_5-1-2001-07-29-branch.

I changesproofread this in an unusual wachangesy: I performed the same substitutions
of s/void/(void|)/ and s/const &/const ?&/ on my own copy, then
compared against Michael Snyder's version.

I ran before-and-after tests with:

  gcc: 2.95.3 3.0.2 HEAD gcc-3_0-branch
  gdb: HEAD gdb_5_1-2001-07-29-branch

I'm a little bit concerned that this test now PASSes on a lot
of test output like this:

  # gcc-3.0.2-gdb-HEAD/gdb.log
  (gdb) ptype VA
  type = class VA {
    public:
      int va;

      VA & operator=(VA const&);
      VA(VA const&);
      VA(VA const&);
      VA();
      VA();
  }
  (gdb) PASS: gdb.c++/virtfunc.exp: ptype VA (obsolescent gcc or gdb)

The duplicate constructor names are confusing.
There is an open PR for this (PR gdb/27).

Not only does it PASS, but it says "obsolescent gcc or gdb"!

However, there is another test script that covers this (classes.exp),
so it is okay to let virtfunc.exp PASS on this.

Michael C