TYPE_VOLATILE cleanups

[Nathan Sidwell]

Mark Mitchell wrote:
> OK.  But, we're pushing the boundary of "bug" for Stage 3.  If you need 
> to do a cleanup to fix a bug, then please try to mention what bug you're 
> fixing.

oh, sorry, I forgot we were stage 3.  I was looking at bug 21799 and the 
representation of MEMBER_TYPE.  this cleanup came out of trying to put the cv 
qualifiers on the MEMBER_TYPE node itself.  However, I've come to the conclusion 
that trying to do that is wrong.  The this-pointer qualifiers are NOT the same 
as regular cv qualifiers, and trying to represent them in the same way causes 
all sorts of problems.

I'll keep this patch back until we branch.

nathan

-- 
Nathan Sidwell    ::   http://www.codesourcery.com   ::     CodeSourcery LLC
nathan@codesourcery.com    ::     http://www.planetfall.pwp.blueyonder.co.uk