experimental: multiplicity and ithreads

I'm not 100% clear on the history here.

5.6 introduces multiplicity and ithreads as experimental, with "no Perl API."

In the 5.8 delta, old style threads are called deprecated, and ithreads are
touted as a new thing.

So it seems to me like in 5.8, the experiment is over and accepted.  I will
update perlexperiment to reflect this unless someone has evidence to the
contrary.

-- 
rjbs

• experimental: multiplicity and ithreads by Ricardo Signes
• Re: experimental: multiplicity and ithreads by Ricardo Signes
• Re: experimental: multiplicity and ithreads by Eric Brine
• Re: experimental: multiplicity and ithreads by Rev. Chip
• Re: experimental: multiplicity and ithreads by Tim Bunce
• Re: experimental: multiplicity and ithreads by Leon Timmermans
• Re: experimental: multiplicity and ithreads by Elizabeth Mattijsen
• Re: experimental: multiplicity and ithreads by Jan Dubois