explicitly cast location headers to string for supporting mod_wsgi
explicitly cast location headers to string for supporting mod_wsgi

git-svn-id: c22915a7c370be3ea898bc36961810cc98a757b4@510 2bf6ea0f-123d-0410-b71a-f1a21eb24612

fcrepo4-labs/sss,fcrepo4-archive/sss