zsh: increase ulimit again
zsh: increase ulimit again

For huge Ant builds. For some reason, I used to have this at 65535 but I
lowered it in 18e0cbebd789b1950c509d7eaae7088c4707487d to "silence
annoying ulimit warnings" of "ulimit: value exceeds hard limit".

In my current testing , not seeing any warnings like that.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent