* move mapreduce version of TableInputFormat tests out of mapred
* add ability to get runnable job via MR test shims
* correct the javadoc example for current APIs.
* add tests the run a job based on the extending TableInputFormatBase (as given in the javadocs)
* add tests that run jobs based on the javadocs from 0.98
* fall back to our own Connection if ussers of the deprecated table configuration have a managed connection.
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