benchmark: fix printing of large numbers
benchmark: fix printing of large numbers

Don't use Number#toPrecision(), it switches to scientific notation for
numbers with more digits than the precision; use Number#toFixed().

PR-URL: https://github.com/iojs/io.js/pull/185
Reviewed-By: Chris Dickinson <38a75c4c4f5646d63b752460df745c5b937b7e58@gmail.com>

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node