and eliminate little-endian dependency.
Reviewed-by: NRich Salz <rsalz@openssl.org>

In cooperation with Ard Biesheuvel (Linaro) and Sami Tolvanen (Google).
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

This facilitates "universal" builds, ones that target multiple
architectures, e.g. ARMv5 through ARMv7. See commentary in
Configure for details.
Reviewed-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Pointer out and suggested by: Ard Biesheuvel.

sha/asm/sha256-armv4.pl: add ARMv8 code path.

(and shave off cycle even from integer-only code)

Modest improvement coefficients mean that code already had some
parallelism and there was not very much room for improvement. Special
thanks to Ted Krovetz for benchmarking the code with such patience.

ARM assembler modules.

I can't think of any other cause for failure

developers responsible for -march choice.