 - add an update-metadata flag, and then if the md5's match on an attempted copy, just update the metadata.  - don't bother loading the file we're going to copy until after we've done the md5 check. Should be marginally faster.
 - add an update-metadata flag, and then if the md5's match on an attempted copy, just update the metadata.
 - don't bother loading the file we're going to copy until after we've done the md5 check. Should be marginally faster.


svn commit r68173

silverorange/site,silverorange/site,nburka/site,nburka/site