Commit: Resync libiberty with gcc sources

[Nick Clifton]

Hi Guys,

  I am checking in the attached patch to resync our copy of the
  libiberty sources with the master version in the GCC repository.

Cheers
  Nick

libiberty/ChangeLog
2018-04-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR lto/81968
	* simple-object.c (handle_lto_debug_sections): Keep .comment
	section.

2018-03-02  David Malcolm  <dmalcolm@redhat.com>

	* cp-demangle.c: Update URL for g++ V3 ABI.

2018-01-20  Eli Zaretskii  <eliz@gnu.org>

	* simple-object-xcoff.c (simple_object_xcoff_find_sections): Use
	ulong_type to avoid warning about 32-bit shift.

2018-01-11  Richard Biener  <rguenther@suse.de>
	Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR lto/81968
	* simple-object-common.h (struct simple_object_functions):
	Change copy_lto_debug_sections callback signature.
	* simple-object-elf.c (SHN_HIRESERVE, SHT_SYMTAB_SHNDX,
	SHF_INFO_LINK): Add defines.
	(simple_object_elf_copy_lto_debug_sections): Instead of
	leaving not to be copied sections empty unnamed SHT_NULL
	remove them from the target section headers and adjust section
	reference everywhere.  Handle SHN_XINDEX in the symbol table
	processing properly.
	* simple-object.c (handle_lto_debug_sections): Change
	interface to return a modified string and handle renaming
	of relocation sections.

2018-01-10  Daniel van Gerpen  <daniel@vangerpen.de>

	* argv.c (expandargv): Correct check for dynamically
	allocated argv.

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