[3.3.1 Doc patch] Backport doco changes from Mainline

[Zack Weinberg]

Gerald Pfeifer <pfeifer@dbai.tuwien.ac.at> writes:

>   -FreeBSD 1 is no longer supported in GCC 3.2.
>   +FreeBSD 1 is no longer supported.
>
> It would be much better for this to read
>
>   +FreeBSD 1 is no longer supported since GCC 3.2.

I think it is confusing to say "in GCC 3.2" in the manual for a
release of 3.3 or later, that is why I made the change.  You're
probably right that the threshold version should be preserved.  May I
suggest the wording

    FreeBSD 1 has not been supported since GCC 3.2.

or maybe

    Support for FreeBSD 1 was discontinued in GCC 3.2.
or                            removed
or                            abandoned

Your suggested wording sounds ... not *wrong*, but a bit awkward, to
me anyway.

zw