ACCUMULO-2767 Move CV term definition to class-level, add definition to user manual.
ACCUMULO-2722 Remove throws Exception which isn't actually thrown.
ACCUMULO-2649 Get some more tests for the mapred RangeInputSplit
ACCUMULO-2850 Add enhanced memory stress test scripts

New scripts for the memory stress test make it easy to start and stop multiple
reader and writer processes, in a manner similar to continuous ingest. See the
updated README.md for information on how the scripts are used.