[dna-dev] Refactored projects

I've refactored some of the projects, in preparation for future work. "dna-services" was renamed to "dna-repository", and a few of the interfaces related to sequencers were moved to a new project "dna- spi". Packages within these projects were also renamed accordingly. I suggest updating all of "trunk" (using 'svn' command line tool), and then adjusting your Eclipse environments by closing "dna-services" and importing "dna-repository" and "dna-spi". We'll be renaming "dna-common" to "dna-core" tomorrow AM (CDT), and that will have a major impact on the code base. Hopefully, that's the last significant refactoring before the 0.1 release. Randall