[binutils-gdb] Fix address violation problems when parsing corrupt ELF binaries.

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 24d3e51bf0612c6cf5e9a824b982e7ed38e741c8 ***

Author: Nick Clifton <nickc@redhat.com>
Branch: master
Commit: 24d3e51bf0612c6cf5e9a824b982e7ed38e741c8

Fix address violation problems when parsing corrupt ELF binaries.

	PR 21916
	* elf-attrs.c (_bfd_elf_parse_attributes): Complain about very
	small section lengths.
	* elf.c (_bfd_elf_setup_sections): Skip empty entries in the group
	table.
	(elfcore_grok_freebsd_prstatus): Add checks to make sure that
	there is enough data present in the note.