Only add "from" table if it actually exists, fixes a crash bug if from
isn't specified in the SQL
Fix copy-paste bug in sum on floats
Add simple regression testing tool that executes a large query
intended to exercise all branches of the SQL evaluator - the interface
is still a bit simple-minded, but it's a start
Make "select *" work again
Add patch from Henrik Levkowetz to fix problem with returning multiple results
Make stdev return 0 instead of NaN when there are no rows
Add support for ordering on columns that aren't in the output (they
are included as hidden columns), move order by compilation to before
evaluation, this also makes the code easier to follow, fix some
potential problems with the tables array
Add -Wall, but disable a couple of specific warnings, fix the code
compile cleanly without warnings (mostly harmless stuff)
Bumped the version number to 1.1.0
Re-generated files based on new autoconf file configure.ac