Re: [PATCH v12] GSSAPI encryption support

Hello friends,

Here's v12, both here and on my github:
https://github.com/frozencemetery/postgres/tree/feature/gssencrypt12

What changed:

- The code is aware of memory contexts now.  I actually really like the
  memory context stuff; just didn't see any indication of its existence
  in the code I had read.  Anyway, we allocate server buffers in the
  connection-lifetime context.  The other alternative that we discussed
  on IRC a bit was to avoid palloc()/pfree() entirely in favor of raw
  calloc()/free(), but I think if possible I prefer this approach since
  I find the StringInfo handy to work with.  This eliminates the
  traceback for me with --enable-cassert.

- Error cleanup.  I've been looking very hard at this code in order to
  try to fix the assert, and I've fixed up a couple error paths that
  hadn't been taken.  This involves replacing the double-send with a
  buffer-and-then-send, which turns out to be not only shorter but
  easier for me to reason about.

Thanks!