In C unit tests, move no-param constructors from RNG classes into test classes, and move get_million_result() into test classes.
In C unit tests, move no-param constructors from RNG classes into test classes,
and move get_million_result() into test classes.

cmcqueen/simplerandom,cmcqueen/simplerandom,cmcqueen/simplerandom,cmcqueen/simplerandom,cmcqueen/simplerandom