Soft freeze for the glibc-2.43 release

[Florian Weimer]

* Wilco Dijkstra:

> Hi Florian,
>
>>> I've got the patches ready for commit, I can push them later.
>
> Pushed now. There is a few more bits of dead code that can be removed.
>
>>> My only concern is the tcache count value - it appears we might need
>>> 32 rather than 16 to break even on SPEC.
>>
>> I plan to post my batched free changes.  Do they reach parity with 32?
>> Average tcache consumption should be less because we are not filling
>> it as aggressively.
>
> Yes with tcache_count=32 the geomean of omnetpp and xalancbmk is within 0.1%.

Sorry, and this was with batched free?

Thanks,
Florian