MI: fix base members in references

[Nick Roberts]

> > The attached patch fixed the problem, no regression. I'll write a testcase
> > for it as soon as my previous references patch is reviewed -- I don't want
> > to > pile too many testcases in as-yet-uncommitted file.
> > 
> > OK?

> OK, with a changelog entry.

Actually Vladimir's other patch, MI/C++/references fixup
(http://sourceware.org/ml/gdb-patches/2006-11/msg00373.html), seems to fix
this.  As it also fixes the more general problem of updating references can
this not be applied instead?

-- 
Nick                                           http://www.inet.net.nz/~nickrob