Move old rocksim-based database from .../presets to .../legacy_components
Move rocksim .csv files from .../rocksim_components to .../rocksim_src
Modify BaseComponentDTO to process units
Modify SerializePresets to take a set of directories containing .orc files
as command-line arguments, and process all of them.
Modify swing/build.xml to specify both legacy and new databases for import
Separate swing application code from core code. Moved a bunch of sources
and libraries around. Created new eclipse project.
Further refinements to make it build.
Update gitignore.
