Reduce the number of host calls when logging

[jeffcharles]

While investigating something related to failures when calling console.error, I noticed our current implementation is making more host calls than necessary when writing logs. Each call to write on stream will invoke a host call since writes to the stderr stream are not buffered.

This change ensures we only make one one host call when invoking console.error which should improve runtime performance.

[saulecabrera]

which should improve runtime performance.

I think we should run some benchmarks as part of this change to have a concrete idea of the improvements that we're referring to here.

[jianghong]

Nice find

[jeffcharles]

Added a benchmark, I'm seeing a 9% to 17% improvement for 100 console.error calls with multiple arguments