Applies Danny's patch to resolve issue #17 (changing mimetype causes duplicate properties) in release 2.4 issues list: https://wiki.duraspace.org/display/DSPINT/Release+2.4+Tasks
Applies Danny's patch to resolve issue #17 (changing mimetype causes duplicate properties) in release 2.4 issues list: https://wiki.duraspace.org/display/DSPINT/Release+2.4+Tasks

git-svn-id: 87193d8397980babf26987f37dc15c79bf1c926e@1180 1005ed41-97cd-4a8f-848c-be5b5fe45bcb

duracloud/duracloud,TexasDigitalLibrary/duracloud,TexasDigitalLibrary/duracloud,duracloud/duracloud,TexasDigitalLibrary/duracloud,duracloud/duracloud