RFC: TLS improvements for IA32 and AMD64/EM64T

[Jan Beulich]

>Please check the current x86-64 ABI, the relocations until 31 are all
>taken and reserved, you cannot use the above ones,

It's actually 33 meanwhile. And the same proposal that adds 32 and 33
to x86-64 also suggests using 38 on i386 for a different purpose. See
the thread starting at
http://www.x86-64.org/mailing_lists/list?listname=discuss&listnum=0

Jan