Avoid starting optimistic watchers for node_modules files.
Avoid starting optimistic watchers for node_modules files.

I've also moved both try-catch blocks out of the optimistic wrapper
function in an effort to help V8 optimize the optimistic functions.

Hansoft/meteor,mjmasn/meteor,mjmasn/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor