Acceptance test for getvalues() - (Bug #1271)

Adding an acceptance test for getvalues(), to be sure that if the array contains
list elements on the right hand side then all of the list elements are flattened
into a single list to make the return value a list.
Merge pull request #317 from shaunamarie/bug1271-evaluation-getvalues

Acceptance test for getvalues() - (Bug #1271)