Only const or immutable class thread local variables are allowed

[Joseph Rushton Wakeling]

On 10/12/13 11:31, qznc wrote:
> The changelog is partially generated from Bugzilla issues. That was the main
> reason to also add issues for pull request, afaik.

Fair enough :-)

https://d.puremagic.com/issues/show_bug.cgi?id=11714