x86-64: Add R_X86_64_converted_reloc_bit

x86-64: Add R_X86_64_converted_reloc_bit

Add R_X86_64_converted_reloc_bit to relocation type to indicate if a
relocation is converted from a GOTPCREL relocation.  Linker now generates

failed to convert GOTPCREL relocation; relink with --no-relax

for all cases, including relocations against local symbols.

bfd/

	* elf64-x86-64.c (R_X86_64_converted_reloc_bit): New.
	(elf_x86_64_info_to_howto): Get the real relocation type by
	masking out R_X86_64_converted_reloc_bit.
	(elf_x86_64_check_tls_transition): Get the real relocation type
	by masking out R_X86_64_converted_reloc_bit.
	(elf_x86_64_convert_load_reloc): Set R_X86_64_converted_reloc_bit
	instead of setting converted_reloc.
	(elf_x86_64_relocate_section): Check R_X86_64_converted_reloc_bit
	instead of converted_reloc. Get the real relocation type by
	masking out R_X86_64_converted_reloc_bit.
	(elf_x86_64_link_setup_gnu_properties): Verify that the value of
	R_X86_64_converted_reloc_bit is valid.
	* elfxx-x86.h (converted_reloc): Removed.

ld/

	* testsuite/ld-x86-64/pr19609-2a.d: Updated.
	* testsuite/ld-x86-64/pr19609-2b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4c.d: Likewise.