setrlimit fails in recent versions of Mac OS X

Full details, including a basic fix, in thread:

http://forums.membase.org/thread/memcached-dying-mac-os-x-due-rlimit-fix

Essentially, in memcached.c in both moxi and memcached, the setrlimit fails on recent versions of Mac OS X when trying to set the max number of connections. It seems that you can't assume that rlim_cur can be set to rlim_max, and you can't change rlim_max. This seems a bit broken to me (and I'm an Apple fanboy!).

There's a brief note at the bottom of the setrlimit man page.