conform linknamespace test question

[Florian Weimer]

* Steve Ellcey:

> Can someone help me understand the linknamespace tests in the glibc
> testsuite?  I am running the testsuite on a 64bit ARM system and
> most/many/all of the linknamespace tests are failing.

Too much parallelism?

  <https://sourceware.org/ml/libc-alpha/2015-05/msg00490.html>
  <https://sourceware.org/ml/libc-alpha/2015-12/msg00517.html>

I haven't been able to track this down, despite access to suitable
hardware which triggers this reliably.