Feature for Windows logical processors greater than 64

[sectorzero]

#81

This is my first real rust program :) Started learning about a month back to learn. I used your library to write some toy programs and thought it was good opportunity to contribute to some open issue. Had good learning along the way. Please suggest any refinements/changes.

Since this can have regressions as it is hard to test on actual machines with large number of cores, I have made this a conditional compile feature. I personally did not test on machines with larger number of cores, but followed the Windows API documentation.

Also this method has been tested successfully according to this thread : https://stackoverflow.com/a/52716113

[seanmonstar]

Wow thanks for taking a stab! I'll probably be able to take a better look on Monday.

[seanmonstar]

This looks really thorough! My first question: why did you decide to make the conditional on an extended cargo feature flags? Is there any reason this shouldn't be used if available?

[sectorzero]

Thanks for the review :)

Although I think this method can be used uniformly for all cases, my hunch was that we did not have enough coverage/testing in the real world yet and did not want to force a regression to those people who might be using in production and had nasty experience if something failed. How can I introduce this change without impact - is my intention. There are couple of options - either provide a boolean parameter option to the function to use this method, conditionally compile etc. I just chose one to start off with and see what you or anybody else thinks. I am looking for direction on this.