[libdispatch-dev] portability patches

[Paolo Bonzini]

>> Would these patches be interesting enough that I should dig up my PPC Mac?
>>  Do I have any hope to run libdispatch under Tiger?
>
> "It depends", of course, on what sort of event delivery mechanism you use on
> Tiger.  I'm not sure how fully kqueue was implemented back in Tiger (that
> was a long time ago, for my aging brain, and I don't have a handy Tiger box
> to check with) but there's always poll/select if you want to have a
> background thread monitor events and then reflect them back into the gcd
> dispatch loop somehow.

It's hard enough to find a Tiger compiler with sync builtins that I just
installed FreeBSD. :-)

Paolo