Bug#807418: iceweasel: missing/incorrect timestamps (for 3 files) in iceweasel*.deb package

[Ingo]

Package: iceweasel
Version: 38.2.1esr-1~deb8u1
Severity: normal

Dear Maintainer,

Iceweasel package contains 3 files with incorrect timestamp.
All 3 files have a modification date of 2010, February 1st:

/usr/share/iceweasel/browser/defaults/preferences/firefox-branding.js
/usr/share/iceweasel/browser/defaults/preferences/firefox.js
/usr/share/iceweasel/browser/defaults/preferences/webide-prefs.js

This timestamps are the very same since numerous versions of iceweasel,
depite the fact that the content of the last 2 files changes with every
new version/update of Iceweasel.

This is especially annoying with backups using "rsync" without the "-c"
option for performance reasons. Those files are skipped and not transrferred,
even if the content has changed. This is only discovered when using checksums.

I think with current Debians "reproducible builds" aktivities such things
should not happen anymore.

-- Package-specific info:

-- Extensions information
Name: Classic Theme Restorer
Location: ${PROFILE_EXTENSIONS}/ClassicThemeRestorer at ArisT2Noia4dev.xpi
Status: enabled

Name: Deutsch (DE) Language Pack locale
Location: /usr/lib/iceweasel/browser/extensions/langpack-de at iceweasel.mozilla.org.xpi
Package: iceweasel-l10n-de
Status: enabled

Name: Ghostery
Location: ${PROFILE_EXTENSIONS}/firefox at ghostery.com.xpi
Status: enabled

Name: HTTPS-Everywhere
Location: ${PROFILE_EXTENSIONS}/https-everywhere-eff at eff.org
Status: enabled

Name: Privacy Badger
Location: ${PROFILE_EXTENSIONS}/jid1-MnnxcxisBPnSXQ-eff at jetpack.xpi
Status: enabled

Name: Standard theme
Location: /usr/lib/iceweasel/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
Package: iceweasel
Status: enabled

-- Plugins information
Name: DivX Browser Plug-In
Location: /usr/lib/mozilla/plugins/gecko-mediaplayer-dvx.so
Package: gecko-mediaplayer
Status: enabled

Name: mplayerplug-in is now gecko-mediaplayer 1.0.9
Location: /usr/lib/mozilla/plugins/gecko-mediaplayer.so
Package: gecko-mediaplayer
Status: enabled

Name: QuickTime Plug-in 7.6.9
Location: /usr/lib/mozilla/plugins/gecko-mediaplayer-qt.so
Package: gecko-mediaplayer
Status: enabled

Name: RealPlayer 9
Location: /usr/lib/mozilla/plugins/gecko-mediaplayer-rm.so
Package: gecko-mediaplayer
Status: enabled

Name: Windows Media Player Plug-in
Location: /usr/lib/mozilla/plugins/gecko-mediaplayer-wmp.so
Package: gecko-mediaplayer
Status: enabled


-- Addons package information
ii  gecko-mediapla 1.0.9-2      amd64        Multimedia plug-in for Gecko brow
ii  iceweasel      38.2.1esr-1~ amd64        Web browser based on Firefox
ii  iceweasel-l10n 1:38.2.1esr- all          German language package for Icewe

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages iceweasel depends on:
ii  debianutils               4.5.1
ii  fontconfig                2.11.0-6.3
ii  libasound2                1.0.29-1
ii  libatk1.0-0               2.18.0-1
ii  libc6                     2.19-22
ii  libcairo2                 1.14.4-1
ii  libdbus-1-3               1.10.4-1
ii  libdbus-glib-1-2          0.102-1
ii  libevent-2.0-5            2.0.21-stable-2+b1
ii  libffi6                   3.2.1-3
ii  libfontconfig1            2.11.0-6.3
ii  libfreetype6              2.6.1-0.1
ii  libgcc1                   1:5.2.1-23
ii  libgdk-pixbuf2.0-0        2.32.2-1
ii  libglib2.0-0              2.46.2-1
ii  libgtk2.0-0               2.24.28-1
ii  libhunspell-1.3-0         1.3.3-3+b2
ii  libpango-1.0-0            1.38.1-1
ii  libsqlite3-0              3.9.2-1
ii  libstartup-notification0  0.12-4
ii  libstdc++6                5.2.1-23
ii  libx11-6                  2:1.6.3-1
pn  libxcomposite1            <none>
ii  libxdamage1               1:1.1.4-2+b1
ii  libxext6                  2:1.3.3-1
ii  libxfixes3                1:5.0.1-2+b2
ii  libxrender1               1:0.9.9-2
ii  libxt6                    1:1.1.5-1
ii  procps                    2:3.3.10-2
ii  zlib1g                    1:1.2.8.dfsg-2+b1

Versions of packages iceweasel recommends:
ii  gstreamer1.0-libav         1:1.6.1-dmo1
ii  gstreamer1.0-plugins-good  1.6.1-1

Versions of packages iceweasel suggests:
ii  fonts-mathjax          2.5.3-1
pn  fonts-oflb-asana-math  <none>
ii  fonts-stix [otf-stix]  1.1.1-4
ii  libcanberra0           0.30-2.1
ii  libgnomeui-0           2.24.5-3
ii  libgssapi-krb5-2       1.13.2+dfsg-4
pn  mozplugger             <none>

-- no debconf information