Refactored the parallel pass in preparation for folding some handling of the on-statement into this pass, namely the bundling of arguments required to call the function to remotely fork a thread.
Refactored the parallel pass in preparation for folding some handling
of the on-statement into this pass, namely the bundling of arguments
required to call the function to remotely fork a thread.

Minor renaming and code cleanup.


git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@12965 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

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