Add an `-o` and `--output` options to allow command line setting of the
output file (matching `\o` command).
Add tests for the new options, Fix my bugs in the original code.
Merge remote-tracking branch 'origin/master' into add-output-command-line
Update to default/latest with new method name.
merge tjoneslo: Add an `-o` and `--output` options

Merge pull request #53 from FoundationDB/sql-layer-client-tools/add-output-command-line
https://github.com/FoundationDB/sql-layer-client-tools/pull/53