skips files that have already been fetched; also, curls into "file.part" and then moves to "file" so that it doesn't think it's finished with a download until it's finished with a download
skips files that have already been fetched;
also, curls into "file.part" and then moves to "file" so that it doesn't think it's finished with a download until it's finished with a download


git-svn-id: https://beagle.whoi.edu/svn/ifcb/trunk@120 9f5e5bc8-6430-4f94-ad00-aad15e9f9366

Former-commit-id: 530986651c494318b2a983ccd6f5f270eb461b13
hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis