[libstdc++] Add --disable-hosted-libstdcxx, clean up conditionals

[Gabriel Dos Reis]

Phil Edwards <phil@jaj.com> writes:

| On Thu, Aug 28, 2003 at 11:32:17AM +0200, Gabriel Dos Reis wrote:
| > Phil Edwards <phil@jaj.com> writes:
| > 
| > | The main point of this patch is --disable-hosted-libstdcxx, which will
| > 
| > This flag should read --disable-hosted-libstdc++ for clearity,
| > consistency.  The hosted library is not named libstdcxx, but libstdc++.
| 
| All the other configure options were recently changed /from/ libstdc++
| to libstdcxx, at the request of toplevel maintainers.  I happen to agree
| with it, but even if I didn't, it was made for valid reasons.

Do you think my request is based on non-valid reasons?

-- Gaby