[Patch docs 0/5] Update some of md.texi

[James Greenhalgh <james dot greenhalgh at arm dot com>]

Hi,

I was recently stuck on a flight and flicking through md.texi, when
I realised some of it was rather outdated. Consequently, I thought
I would have a go at updating it, and while I was there, clean up some
of the style issues I've spotted over the last few years.

I was aiming to:

  * Remove outdated details of the compiler.
  * Remove long or obscure words that, while accurate, only served to
    obfuscate a simple idea.
  * Refer to similar things in a consistent fashion - in particular
    trying to keep consistent use of "insn" and "pattern".
  * Remove superflous examples, or waffling.
  * Update some K&R C and make it use GNU-style.

I've split the patch to a 5-patch series, roughly covering one section
in each.

There is probably much more that I can do to clean these up, and of
course there is the rest of the file to do... If this work is useful,
I'm happy to keep going over the next couple of weekends.

I've read through the output in info and a web browser, and I couldn't
spot any major formatting errors.

OK?

Thanks,
James

---
James Greenhalgh (5):
  [Patch docs 1/5] Update the first section of md.texi
  [Patch docs 2/5] Update "Instruction Patterns" in md.texi
  [Patch docs 3/5] Update "RTL Template" in md.texi
  [Patch docs 4/5] Update "Output Template/Statement" from md.texi
  [Patch docs 5/5] Update "Predicates" from md.texi