2013-03-27  Jeremy Bennett  <jeremy.bennett@embecosm.com>

	* linux-arc-low.c: Use linux/elf.h rather than elf.h
	(arc_cannot_fetch_regiser): Not conditional on
	ARC_LEGACY_PTRACE_ABI.
	(arc_fetch_register): Conditional on ARC_LEGACY_PTRACE_ABI.
	* linux-low.c: Define Elf32_auxv_t and Elf64_auxv_t and associated
	constants to work round problem with ARC Linux 3.8 headers.