Make bfd.link_next field a union

This field of struct bfd is currently only used to chain together
linker input files.  This patch prepares to use the field to stash
the linker hash table, which is always created on the linker output
file.

bfd/
	* bfd.c (struct bfd): Replace link_next with a union.
	* aoutx.h, * bfd.c, * coff-ppc.c, * coff-rs6000.c, * cofflink.c,
	* ecoff.c, * elf-m10300.c, * elf32-arm.c, * elf32-avr.c,
	* elf32-hppa.c, * elf32-i386.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-metag.c,
	* elf32-microblaze.c, * elf32-nds32.c, * elf32-nios2.c,
	* elf32-or1k.c, * elf32-ppc.c, * elf32-rl78.c, * elf32-s390.c,
	* elf32-score.c, * elf32-score7.c, * elf32-sh.c, * elf32-spu.c,
	* elf32-tic6x.c, * elf32-tilepro.c, * elf32-xstormy16.c,
	* elf32-xtensa.c, * elf64-alpha.c, * elf64-hppa.c, * elf64-ia64-vms.c,
	* elf64-mmix.c, * elf64-ppc.c, * elf64-s390.c, * elf64-x86-64.c,
	* elflink.c, * elfnn-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * linker.c, * pdp11.c, * peXXigen.c, * simple.c,
	* sunos.c, * vms-alpha.c, * xcofflink.c: Update for above.
	* bfd-in2.h: Regenerate.
include/
	* bfdlink.h: Update for bfd.link_next change.
ld/
	* emultempl/cr16elf.em, * emultempl/elf32.em, * emultempl/genelf.em,
	* emultempl/m68kcoff.em, * emultempl/m68kelf.em,
	* emultempl/nds32elf.em, * emultempl/pe.em, * emultempl/pep.em,
	* ldlang.c, * ldmain.c, * pe-dll.c: Update for bfd.link_next change.

1 files changed, 3 insertions, 3 deletions

diff --git a/bfd/pdp11.c b/bfd/pdp11.c
index e728928..8999af2 100644
--- a/bfd/pdp11.c
+++ b/bfd/pdp11.c
@@ -3638,7 +3638,7 @@ aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
 
 /* Do the final link step.  This is called on the output BFD.  The
    INFO structure should point to a list of BFDs linked through the
-   link_next field which can be used to find each BFD which takes part
+   link.next field which can be used to find each BFD which takes part
    in the output.  Also, each section in ABFD should point to a list
    of bfd_link_order structures which list all the input sections for
    the output section.  */
@@ -3685,7 +3685,7 @@ NAME (aout, final_link) (bfd *abfd,
   max_contents_size = 0;
   max_relocs_size = 0;
   max_sym_count = 0;
-  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+  for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
     {
       size_t sz;
 
@@ -3823,7 +3823,7 @@ NAME (aout, final_link) (bfd *abfd,
 
      We use the output_has_begun field of the input BFDs to see
      whether we have already handled it.  */
-  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+  for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
     sub->output_has_begun = FALSE;
 
   /* Mark all sections which are to be included in the link.  This