[build] Honor --disable-symvers (PR bootstrap/48135)

[Rainer Orth]

Richard Guenther <richard.guenther@gmail.com> writes:

>>> Ok for 4.7, RMs should decide about 4.6.1.
>>
>> Applied, thanks.  It would be nice to get into 4.6 (even 4.6.1) since
>> otherwise install.texi which claims --disable-symvers as a workaround
>> lies :-)
>
> Ok.

Just to make no mistake: ok for 4.6.0 or ok for 4.6.1?

Thanks.
	Rainer

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Rainer Orth, Center for Biotechnology, Bielefeld University