Bug#815006: Renaming Iceweasel to Firefox

[Mike Hommey]

Time flies, and no upload has been done yet. I apologize for this. I've
been successively busy, then down with influenza.

Anyways, after having given this more thought, here are a few
observations on the implementation side:

- Since Debian hasn't had firefox* package in years, and even back then,
  according to snapshot.debian.org, there weren't any firefox-l10n
  packages (only individual firefox-locale-* packages), we can drop the
  epoch in the l10n packages version numbers (woohoo! They were added
  for no apparent reason ; at least none explained in the iceweasel-l10n
  source package changelog).

- For the same reason, parts of the "upgrade" code can go away (things
  that remove compreg.dat, xpti.dat and .autoreg, for instance ; or old
  conffiles)

- Going around the debian/ directory, I realize libxul.pc as installed
  in iceweasel-dev has been wrong since version 40... yet that went
  largely unnoticed. Which brings the question: do we need to provide
  pkgconfig files? They were justified back when xulrunner-dev existed,
  but things have changed since then. And it's not like those files
  exist upstream (they were part of xulrunner in some way, and never
  existed when building Firefox ; the Firefox SDK has never come with
  pkgconfig files). I'm tempted to say: "clean slate, start without them",
  although the versioned paths in the -dev package are kind of
  annoying...

- The information about sound in README.Debian is irrelevant to a new
  package and some of the information in that file is actually outdated.
  I doubt the instructions for java still work, for instance.

- Relatedly, the information in NEWS should probably move to README.Debian.

- Not related to switching to Firefox, but just adding this as a note to
  myself, so as not to forget: I removed the menu file in iceweasel
  44.0.2-1, but didn't remove the .xpm icon it was using. There is no
  reason to keep that icon around.

- My plan is to upload an "independent" Firefox package (as in, with no
  transitional package) that will follow Firefox releases every 6~8
  weeks. Considering the timing in the current cycle, I might as well
  wait for the release of Firefox 45 next week, although since the
  package would have to go through NEW, it is also sensible to upload 44
  ASAP to get a chance to get it out of NEW before 45 is released.
  This package would have a permanent RC bug to prevent it from entering
  testing, because it is not expected to be part of a Debian release.

- A separate "firefox-esr" source package would provide iceweasel and
  iceweasel-l10n-* transitional package and would follow Firefox ESR
  releases. Something that needs to be checked is what the Debian policy-
  compliant way of moving the conffiles from /etc/iceweasel to
  /etc/firefox-esr would be.

- Speaking of conffiles, version 46 is removing /etc/$package/profile.
  I'm very tempted to remove it in 45 because that would only leave
  /etc/iceweasel/pref/*.js to migrate, and would keep upgrade code free of
  conffiles removal entirely. This would allow to simply use
  /etc/firefox{,-esr}/*.js files.

Mike