PR ld/13329

	PR ld/13329
ld/
	* plugin.c (tv_header_tags): Add LDPT_GET_SYMBOLS_V2.
	(set_tv_header): Handle it.  Adjust LDPT_GET_SYMBOLS.  Return void.
	(get_symbols): Add def_ironly_exp param.  Return that value for
	syms exported from shared libs.
	(get_symbols_v1, get_symbols_v2): New wrapper functions.
	* testplug.c: Update for above changes.
ld/testsuite/
	* ld-plugin/plugin-1.d, * ld-plugin/plugin-2.d, * ld-plugin/plugin-3.d,
	* ld-plugin/plugin-4.d, * ld-plugin/plugin-5.d, * ld-plugin/plugin-6.d,
	* ld-plugin/plugin-7.d, * ld-plugin/plugin-8.d, * ld-plugin/plugin-9.d,
	* ld-plugin/plugin-10.d, * ld-plugin/plugin-11.d: Update.