failed to build against exiv2 0.28

While trying to upgrade exiv2 to 0.28, we found some regression build failures with gexiv2 1.0.6 release.

core/exif.cpp:111:18: error: no type named 'AnyError' in namespace 'Exiv2'
        } catch (Exiv2::AnyError &e) {
                 ~~~~~~~^