Remove remaining compilation warnings. Thanks again to Thomas Schmitt.
Unicode support to udf_fs and return UTF-8 strings where relevant. From Pete Batard
Add new UDF test image
Fix UTF-8 test string in testudf.c.in

* Data from 70295810bf4cf79eb647c9537dbbd3f62f26ed5e
  was not checked in as UTF-8
Merge branch 'master' of git.sv.gnu.org:/srv/git/libcdio