dump: add argument to write_elfxx_notes write_elf32_notes/wirte_elf64_notes use fd_write_vmcore to write elf notes to vmcore. Adding parameter "WriteCoreDumpFunction f" makes it available to choose the method of writing elf notes Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>