Request for review: 8016302: Change type of the number of GC workers to unsigned int (2)

[Vladimir Kempik]

Hi all,

Could I have a couple of reviews for this change?

http://cr.openjdk.java.net/~vkempik/8016302/webrev.00/

In 7121618 variables representing GC workers (worker id, worker id 
offset) have been changed from int to unsigned int.

Since then, code reintroduced the use of int's for this type of 
variable; fixing this by aligning the code to use uints for ints.

Thanks,
Vladimir