addresses #724 finished most of testing for split and merge still need to test error cases such as times when ERANGE is expected
addresses #724
finished most of testing for split and merge
still need to test error cases such as times when ERANGE is expected

git-svn-id: 4b2652e19d8125fd9d24eff55f31fd1beb5a42e7@3604 c7de825b-a66e-492c-adef-691d508d4ae1

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