(SEC_LINK_DUPLICATES): Define.
(SEC_LINK_DUPLICATES_DISCARD): Define.
(SEC_LINK_DUPLICATES_ONE_ONLY): Define.
(SEC_LINK_DUPLICATES_SAME_SIZE): Define.
(SEC_LINK_DUPLICATES_SAME_CONTENTS): Define.
* bfd-in2.h: Rebuild.
* coffcode.h (sec_to_styp_flags): If COFF_WITH_PE, turn
SEC_LINK_ONCE into IMAGE_SCN_LNK_COMDAT.
(styp_to_sec_flags): If COFF_WITH_PE, turn IMAGE_SCN_LNK_REMOVE
into SEC_EXCLUDE. If IMAGE_SCN_LNK_COMDAT is set, set
SEC_LINK_ONCE, and look through the symbol table for the setting
for SEC_LINK_DUPLICATES.
(coff_write_object_contents): If COFF_WITH_PE, if SEC_LINK_ONCE is
set for a section, find the section symbol in the symbol table,
and set the aux entry based on SEC_LINK_DUPLICATES.
* coffgen.c (coff_print_symbol): Add a space before "checksum".
* coff-arm.c (armcoff_big_vec): If COFF_WITH_PE is defined, add
SEC_LINK_ONCE and SEC_LINK_DUPLICATES to section_flags.
* coff-i386.c (i386coff_vec): Likewise.
* coff-ppc.c (TARGET_LITTLE_SYM, TARGET_BIG_SYM): Likewise.
* bfd-in2.h: Rebuild.
* aoutx.h (NAME(aout,final_link)): Mark sections included in the
link.
(aout_link_input_bfd): Don't link unmarked sections.
* cofflink.c (_bfd_coff_final_link): Mark sections included in the
link.
(_bfd_coff_link_input_bfd): Don't link unmarked sections.
* coff-ppc.c (ppc_bfd_coff_final_link): Mark sections included in
the link.
* elflink.h (elf_bfd_final_link): Mark sections included in the
link.
(elf_link_input_bfd): Don't link unmarked sections.
* xcofflink.c (_bfd_xcoff_bfd_final_link): Mark sections included
in the link.
(xcoff_link_input_bfd): Don't link unmarked sections.
(bfd_zmalloc): Return PTR, not char *. Take size_t, not
bfd_size_type.
* libbfd-in.h (bfd_malloc, bfd_realloc): Declare.
(bfd_zmalloc): Change declaration.
* libbfd.h: Rebuild.
* Many files: Use bfd_malloc and bfd_realloc rather than malloc
and realloc. Don't set bfd_error_no_memory if they fail.
obstack_alloc fails.
(bfd_alloc_finish): Set bfd_error_no_memory if obstack_finish
fails.
* libbfd.c (bfd_zmalloc): Set bfd_error_no_memory if malloc fails.
* Many files: don't set bfd_error_no_memory if one of the above
routines fails.
