[libiberty] don't demangle functions named "."

[Ian Lance Taylor]

Thiago Jung Bauermann <bauerman@br.ibm.com> writes:

> 2008-01-09  Thiago Jung Bauermann  <bauerman@br.ibm.com>
> 
> 	* cplus-dem.c (demangle_function_name): Changed to return value
> 	indicating if a name was correctly demangled.
> 	(iterate_demangle_function): Use demangle_function_name return value.

This is OK.

Thanks.

Ian