Remove support for big-endian i386 and amd64.

Remove support for big-endian i386 and amd64.

Before someone suggests the OpenSSL people are junkies, here is what they
mention about this:
	/* Most will argue that x86_64 is always little-endian. Well,
	 * yes, but then we have stratus.com who has modified gcc to
	 * "emulate" big-endian on x86. Is there evidence that they
	 * [or somebody else] won't do same for x86_64? Naturally no.
	 * And this line is waiting ready for that brave soul:-) */

So, yes, they are on drugs. But they are not alone, the stratus.com people are,
too.