Added the option to create an inventory csv file.

The inventory hold the number of sensor and reading for each station.
Updated the method to partition the weather data.

The new method is per xml file using a round robin method.
Switched q06 and q07 to order by number of records in the join.
Updated the comparator to actually check the two values.
New weather benchmark test suite that includes tests for 1, 2, and 4 partitions of data.
Added a new test group to show counts of the benchmark queries.
Added more parallel tests to the VXQuery test suite.

* Added specific aggregate queries.
* Added supporting count and record queries to debug parallel aggregate and join queries.
Found some files missing from the last commit for aggregate tests.
The if statement did not match the assignment order.
Found an error in the aggregate functions where the argument was overwriting the saved value.