* addr2line.c (slurp_symtab): If canonicalization reveals that
	there were no ordinary symbols, try loading the dynamic symbols
	instead.
	* gas/arm/arch7.d: Skip for non-ELF ARM targets.
	* gas/arm/arch7a-mp.d: Likewise.
	* gas/arm/arch7em.d: Likewise.
	* gas/arm/crc32-bad.d: Likewise.
	* gas/arm/crc32.d: Likewise.