The newer update-copyright.py fixes file encoding too, removing cr/lf
on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and
embedded cr in binutils/testsuite/binutils-all/ar.exp string match.

This feature is enabled if config/zstd.m4 uses zstd.

Following the same format as the implementation in ld:
9e2bb0cb5e74aed4158f08495534922d7108f928

Generate a .note.package FDO package metadata ELF note, following
the spec: https://systemd.io/ELF_PACKAGE_METADATA/

If the jansson library is available at build time (and it is explicitly
enabled), link ld to it, and use it to validate that the input is
correct JSON, to avoid writing garbage to the file. The
configure option --enable-jansson has to be used to explicitly enable
it (error out when not found). This allows bootstrappers (or others who
are not interested) to seamlessly skip it without issues.

elfcpp/
	* elfcpp.h: Add FDO_PACKAGING_METADATA note type.

gold/
	* Makefile.am: Add jansson flags and libraries.
	* configure.ac: Check for jansson library.
	* layout.cc (Layout::create_notes): Call create_package_metadata().
	(Layout::create_package_metadata): New function.
	* layout.h (Layout::create_package_metadata): New function.
	(Layout::package_metadata_note_): New data member.
	* options.h (class General_options): Add --package-metadata option.
	* testsuite/Makefile.am (object_unittest): Add jansson libraries.
	(binary_unittest): Likewise.
	(leb128_unittest): Likewise.
	(overflow_unittest): Likewise.
	(package_metadata_test): New test.
	* testsuite/package_metadata_main.c: New test source.

The result of running etc/update-copyright.py --this-year, fixing all
the files whose mode is changed by the script, plus a build with
--enable-maintainer-mode --enable-cgen-maint=yes, then checking
out */po/*.pot which we don't update frequently.

The copy of cgen was with commit d1dd5fcc38ead reverted as that commit
breaks building of bfp opcodes files.

Gold version of commit 7aba54da42.

elfcpp/
	* powerpc.h (R_PPC64_REL24_P9NOTOC): Define.
gold/
	* powerpc.cc (Target_powerpc::maybe_skip_tls_get_addr_call,
	is_branch_reloc, max_branch_delta): Handle R_PPC64_REL24_P9NOTOC.
	(Target_powerpc::Branch_info::make_stub): Likewise.
	(struct Plt_stub_ent): Add p9notoc_, p9off_, tsize_.
	(struct Branch_stub_ent): Add p9notoc_, p9off_.
	(Stub_table::add_plt_call_entry): Handle R_PPC64_REL24_P9NOTOC.
	(Stub_table::add_long_branch_entry): Likewise.
	(Stub_table::add_eh_frame): Likewise.
	(Stub_table::plt_call_size): Return aligned size.  Adjust callers.
	Handle p9notoc_ sizing.
	(Stub_table::do_write): Write out p9notoc_ stubs.
	(Target_powerpc::Scan::get_reference_flags, local, global):
	Handle R_PPC64_REL24_P9NOTOC.
	(Target_powerpc::Relocate::relocate): Likewise.

Update also include:
	+ New value of Tag_CPU_arch EABI attribute (22) is added.
	+ Updated missing Tag_CPU_arch EABI attributes.
	+ Updated how we combine archs 'v4t_plus_v6_m' as this mechanism
	  have to handle new Armv9 as well.

Regression tested on `arm-none-eabi` cross Binutils and no issues.

bfd/

	* archures.c: Define bfd_mach_arm_9.
	* bfd-in2.h (bfd_mach_arm_9): Define bfd_mach_arm_9.
	* cpu-arm.c: Add 'armv9-a' option to -march.
	* elf32-arm.c (using_thumb2_bl): Update assert check.
	(arch_has_arm_nop): Add TAG_CPU_ARCH_V9.
	(bfd_arm_get_mach_from_attributes): Add case for TAG_CPU_ARCH_V9.
	Update assert.
	(tag_cpu_arch_combine): Updated table.
	(v9): New table..

binutils/

	* readelf.c (arm_attr_tag_CPU_arch): Update with

elfcpp/

	* arm.h: Update TAG_CPU_ARCH_ enums with correct values.

gas/

	* NEWS: Update docs.
	* config/tc-arm.c (get_aeabi_cpu_arch_from_fset): Return Armv9-a
	for -amarch=all.
	(aeabi_set_public_attributes): Update assert.
	* doc/c-arm.texi: Update docs.
	* testsuite/gas/arm/armv9-a_arch.d: New test.
	* testsuite/gas/arm/attr-march-all.d: Update test with v9.

include/

	* elf/arm.h Update TAG_CPU_ARCH_ defines with correct values.
	* opcode/arm.h (ARM_EXT3_V9A): New macro.
	(ARM_ARCH_NONE): Updated with arm_feature_set.core size.
	(FPU_NONE): Updated.
	(ARM_ANY): Updated.
	(ARM_ARCH_UNKNOWN): New macro.
	(ARM_FEATURE_LOW): Updated.
	(ARM_FEATURE_CORE): Updated.
	(ARM_FEATURE_CORE_LOW): Updated.
	(ARM_FEATURE_CORE_HIGH): Updated.
	(ARM_FEATURE_COPROC): Updated.
	(ARM_FEATURE): Updated.
	(ARM_FEATURE_ALL): New macro.

opcodes/

	* arm-dis.c (select_arm_features): Support bfd_mach_arm_9.
	Also Update bfd_mach_arm_unknown to use new macro ARM_ARCH_UNKNOWN.

bfd/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* elf32-arm.c (elf32_arm_merge_eabi_attributes): Add
	'Tag_PACRET_use' case.

binutils/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* readelf.c (arm_attr_tag_PAC_extension): Declare.
	(arm_attr_public_tags): Add 'PAC_extension' lookup.

elfcpp/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* arm.h: Define 'Tag_PACRET_use' enum.

gas/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* config/tc-arm.c (arm_convert_symbolic_attribute): Add
	'Tag_PACRET_use' to the attribute_table.

include/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* elf/arm.h (elf_arm_reloc_type): Add 'Tag_PACRET_use'.