Hi,

Having updated the way we parse and output extension strings, now we just
need to wire up the native detection to use these new features.

In doing some cleanup and rename I ended up fixing 8-spaces to tabs in
about half the file. I've done the rest while I'm here to save us from
some a mixed-style file.

Bootstrapped on aarch64-none-linux-gnu, then tested with defaults and
an explicit -march=native passed (on a system detected as
cortex-a57+crypto, and again on a system detected as
cortex-a72.cortex-a53+crypto). I also set up a dummy /proc/cpuinfo and
used that to manually check the input data in pr70133.

OK?

Thanks,
James

---
2016-04-06  James Greenhalgh  <james.greenhalgh@arm.com>

	PR target/70133

	* config/aarch64/driver-aarch64.c
	(aarch64_get_extension_string_for_isa_flags): New.
	(arch_extension): Rename to...
	(aarch64_arch_extension): ...This.
	(ext_to_feat_string): Rename to...
	(aarch64_extensions): ...This.
	(aarch64_core_data): Keep track of architecture extension flags.
	(cpu_data): Rename to...
	(aarch64_cpu_data): ...This.
	(aarch64_arch_driver_info): Keep track of architecture extension
	flags.
	(get_arch_name_from_id): Rename to...
	(get_arch_from_id): ...This, change return type.
	(host_detect_local_cpu): Update and reformat for renames, handle
	extensions through common infrastructure.