x86: Disallow invalid relocations against protected symbols

x86: Disallow invalid relocations against protected symbols

Since glibc 2.36 will issue warnings for copy relocation against
protected symbols and non-canonical reference to canonical protected
functions, change the linker to always disallow such relocations.

bfd/

	* elf32-i386.c (elf_i386_scan_relocs): Remove check for
	elf_has_indirect_extern_access.
	* elf64-x86-64.c (elf_x86_64_scan_relocs): Likewise.
	(elf_x86_64_relocate_section): Remove check for
	elf_has_no_copy_on_protected.
	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Check for building
	executable instead of elf_has_no_copy_on_protected.
	(_bfd_x86_elf_adjust_dynamic_symbol): Disallow copy relocation
	against non-copyable protected symbol.
	* elfxx-x86.h (SYMBOL_NO_COPYRELOC): Remove check for
	elf_has_no_copy_on_protected.

ld/

	* testsuite/ld-i386/i386.exp: Expect linker error for PR ld/17709
	test.
	* testsuite/ld-i386/pr17709.rd: Removed.
	* testsuite/ld-i386/pr17709.err: New file.
	* testsuite/ld-x86-64/pr17709.rd: Removed.
	* testsuite/ld-x86-64/pr17709.err: New file.
	* testsuite/ld-x86-64/pr28875-func.err: Updated.
	* testsuite/ld-x86-64/x86-64.exp: Expect linker error for PR
	ld/17709 test.  Add tests for function pointer against protected
	function.