[RFA] Add new command class_experimental

[Eli Zaretskii]

> Date: Fri, 18 Nov 2005 12:25:46 -0800
> From: Michael Snyder <msnyder@redhat.com>
> 
> This is to add a new category of gdb commands, "experimental".
> These will be explicitly "use at your own risk", and gdb will
> tell you so.

Hmm... I'm not sure I like this idea.  Why not add these as normal
commands?  If it's useful and stable enough, people will use it.  As
for possible bugs, the non-experimental stuff has those too.