fix for tls.c

[Kenichi Okada]

In the message "fix for tls.c"
               <sg7lc42t29.wl at opaopa.org>
I wrote:

> This patch fixes tls.c for IRIX-6.2(and etc),
> which needs to include alloca.h.

I don't check it.
Please test it. :)

-- 
Kenichi Okada
mailto:okada at opaopa.org