For copyright and maintenance reasons, use the data files from UCD
without modification.
* tests/uniname/test-uninames.c (FIELDLEN): Remove.
(getfield): Remove.
(aliases_count): New global variable.
(fill_names): Skip comments and empty lines in the input. Don't
use getfield.
(fill_aliases): Likewise.
(main): Change the expected command line arguments to:
NAMES... ["--" ALIASES...].
* tests/uniname/test-uninames.sh: Adjust to the change in
test-uninames.c.
* tests/uniname/UnicodeDataNames.txt: Remove.
* tests/uniname/UnicodeData.txt: New file, from Unicode 8.0.0.
* tests/uniname/NameAliases.txt: Use the pristine copy of the data
file from Unicode 8.0.0.