Truncated request bodies

[Vadim Spivak]

There seems to be a ruby bug in 1.8.7 on OS X that's causing request
bodies to be truncated in unicorn when they're bigger than the
MAX_BODY (backed by a temp file instead of stringio).

Example of truncation: http://gist.github.com/211431

Smaller ruby bug example: http://gist.github.com/216703

I couldn't reproduce this on 1.9.1 on OS X or 1.8.7 on Linux.

Thanks,
Vadim