This provides a convenient hook to be called between SSH messages, for
the crypto components to do any per-message processing like
incrementing a sequence number.
I think a lot of these were inserted by a prior run through GNU indent
many years ago. I noticed in a more recent experiment that that tool
doesn't always correctly distinguish which instances of 'id * id' are
pointer variable declarations and which are multiplications, so it
spaces some of the former as if they were the latter.
In several pieces of development recently I've run across the
occasional code block in the middle of a function which suddenly
switched to 2-space indent from this code base's usual 4. I decided I
was tired of it, so I ran the whole code base through a re-indenter,
which made a huge mess, and then manually sifted out the changes that
actually made sense from that pass.
Indeed, this caught quite a few large sections with 2-space indent
level, a couple with 8, and a handful of even weirder things like 3
spaces or 12. This commit fixes them all.
sshblowf.h (as was) is 100% internal to that directory. And mpint_i.h
and ecc.h are specialist enough that it's reasonable to ask clients
outside the crypto directory to include them with a subdirectory path,
to hint that it's an unusual thing to be doing.
Similarly to 'utils', I've moved all the stuff in the crypto
build-time library into a source directory of its own, and while I'm
at it, split up the monolithic sshauxcrypt.c into its various
unrelated parts.
This is also an opportunity to remove the annoying 'ssh' prefix from
the front of the file names, and give several of them less cryptic
names.
