ld-sh/refdbg.s: Add leading 0 to .debug_info to prevent parsing it for error messages.
unresolved debugging relocs in dynamic applications. * elf64-sh64.c (sh_elf64_relocate_section): Likewise. * ld-sh/refdbg-0-dso.d: New test. * ld-sh/refdbg-1.d: Likewise. * ld-sh/refdbg.s: Likewise. * ld-sh/refdbglib.s: Likewise.