When upgrading to Unicode 9.0.0, it was forgotten to add a new character
property, that was introduced in Unicode 9.0.0. This patch adds it now.


2024-02-12  Bruno Haible  <bruno@clisp.org>

	Implement a new property, added by Unicode 9.0.0.
	* lib/gen-uni-tables.c (is_property_prepended_concatenation_mark): New
	function.
	(output_properties): Output also the property
	prepended_concatenation_mark.
	* lib/unictype.in.h (UC_PROPERTY_PREPENDED_CONCATENATION_MARK,
	uc_is_property_prepended_concatenation_mark): New declarations.
	* m4/unictype_h.m4 (gl_UNICTYPE_H_REQUIRE_DEFAULTS): Initialize
	GNULIB_UNICTYPE_PROPERTY_PREPENDED_CONCATENATION_MARK.
	* modules/unictype/base (Makefile.am): Substitute
	GNULIB_UNICTYPE_PROPERTY_PREPENDED_CONCATENATION_MARK.
	* lib/unictype/pr_prepended_concatenation_mark.c: New file.
	* lib/unictype/pr_prepended_concatenation_mark.h: New generated file.
	* modules/unictype/property-prepended-concatenation-mark: New file.
	* tests/unictype/test-pr_prepended_concatenation_mark.c: New generated
	file.
	* modules/unictype/property-prepended-concatenation-mark-tests: New
	file.
	* lib/unictype/pr_byname.gperf: Add prepended_concatenation_mark.
	* lib/unictype/pr_byname.c
	(UC_PROPERTY_INDEX_PREPENDED_CONCATENATION_MARK): New enum item.
	(uc_property_byname): Handle it.
	* modules/unictype/property-byname (Depends-on): Add
	unictype/property-prepended-concatenation-mark.
	* modules/unictype/property-all (Depends-on): Likewise.
	* MODULES.html.sh (func_all_modules): Add
	unictype/property-prepended-concatenation-mark.