While looking into Bug#45648 I noticed that the GNU extensions
count_bytes, seek_bytes, and skip_bytes are confusing, and the proposed
fix to bug#45648 would make them even more confusing. To fix this
confusion, we should deprecate these options, and instead say that if
you want to use byte counts you should use a number string ending in "B".
Here's another way to put it. Currently this:
dd oseek=100KiB
means "seek 102,400 blocks". It should simply mean "seek 102,400 bytes",
which is what it says. And if we change oseek's meaning this way, we
don't need "oseek_bytes".
Although this is an incompatible change to GNU dd, I don't think it'll
affect real-world uses (who would use oseek in such a confusing way
now?) and overall it will be a win.
