This mega-commit introduces a new configuration setting, `log_version`,
that controls the TLog implementations and features that are available
within FDB, so that users can opt in to new features if they're willing
to sacrifice backwards compatibility.
- A set of CMake variables controls whether to keep
the simfdb directory and the traces and whether we
want to aggregate the traces into a single file
- Test labels now contain the directory they are in
so that one can now run `ctest -R fast/`
- A different binary can be used for restart tests. CMake
will automatically look for an installed fdb and use that
by default. If none is found, it will use the built one
but it will also print a warning
- CMake will throw an error if there are any text files in
the tests directory that are not associated with a test.
- Moved testing from fdbserver/CMakeLists.txt to
tests/CMakeLists.txt
- Moved fdb testing functions to its own cmake module
Alex Miller