update to read_rdat_file which permits read in of multiple structures
update to read_rdat_file which permits read in of multiple structures

git-svn-id: 8fe535cc832f22717033981cb7a3934103f9a520@54 cfaf13ac-159d-0410-80bc-d76a6fea7e4a

hitrace/RDATKit,hitrace/RDATKit