Generate correct license notices in libunistring files.
* lib/gen-uni-tables.c (output_library_license, output_tests_license):
New functions.
(output_predicate, output_category, output_combclass,
output_bidi_category, output_decimal_digit, output_digit,
output_numeric, output_mirror, output_joining_type,
output_joining_group, output_scripts, output_scripts_byname,
output_blocks, output_ident_category, output_lbrk_tables,
output_wbrk_tables, output_gbp_table, output_decomposition_tables,
output_composition_tables, output_simple_mapping, output_casing_rules):
Invoke output_library_license.
(output_predicate_test, output_decimal_digit_test, output_digit_test,
output_numeric_test, output_joining_type_test,
output_joining_group_test, output_gbp_test, output_simple_mapping_test):
Invoke output_tests_license.
* lib/uni*/*.h, lib/uni*/*.gperf: Regenerated.
* tests/uni*/*.h: Likewise.