test: add reference test file.

git-svn-id: svn://dev.exiv2.org/svn@3175 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
add modified test files

git-svn-id: svn://dev.exiv2.org/svn@3176 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
modified test file

git-svn-id: svn://dev.exiv2.org/svn@3177 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3