Fix unit tests for Random Numbers. This is for the threaded
branch only. Affects unit tests only. Reference files needed
updating plus minor cleanup. The change that caused this problem
was cleanly merged from the 7_0_X branch, but I did not notice
the unit test reference files needed to be different on the
threaded branch. One conflicted and the other did not exist
in 7_0_X.
Merge pull request #1685 from wddgit/fixRandomNumberUnitTest

Multithreading fixes -- Fix unit tests for Random Numbers. This is for the threaded