RFC: Lose use of $ and . in [cd]tor labels

[Alexandre Petit-Bianco]

Per Bothner writes:

> I think we should handle this similarly as other non-ascii names.
> On systems that can handle UTF8 in labels, we should also use
> '$'. On other systems, we should mangle both.

The Java front-end is set to do that.

> For non-GNU systmem, we need to define a mangling that handles '$'
> and non-ascii.

We defined one, right?

  http://gcc.gnu.org/ml/gcc-patches/2001-01/msg01510.html

./A