rewrite mdrandom() in C. previously this XOR'd against rdrand if available,
and alternatively XOR'd against TSC. now always run both sequences, and
also support rdseed as a third procedure.
ok kett

rewrite mdrandom() in C. previously this XOR'd against rdrand if available,
and alternatively XOR'd against TSC. now always run both sequences, and
also support rdseed as a third procedure.
ok kettenis naddy

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Tweak linker flags and objcopy invocation to make things build with lld.
BOOTIA32.EFI works but BOOTX64.EFI unfortunately doesn't work yet.

ok patrick@

Add missing start_i386.S for ia32. Also start.S is renamed to
start_amd64.S.

BOOTX86.EFI should be BOOTIA32.EFI.

pointed out deraadt kettenis
ok deraadt