Import Debian changes 68.4.1esr-1~deb10u1

firefox-esr (68.4.1esr-1~deb10u1) buster-security; urgency=medium

  * New upstream release.
  * Fix for mfsa2020-03, also known as CVE-2019-17026.

firefox-esr (68.4.0esr-1~deb10u1) buster-security; urgency=medium

  * New upstream release.
  * Fixes for mfsa2020-02, also known as:
    CVE-2019-17016, CVE-2019-17017, CVE-2019-17022, CVE-2019-17024.

  * debian/rules: Don't build with --compress-debug-sections on jessie.
  * debian/rules: Use sourcestamp.txt for MOZ_BUILD_DATE. Closes: #946193.

  * sourcestamp.txt: Fill with the missing info.
  * intl/icu_sources_data.py: Don't build ICU in parallel.
  * gfx/skia/skia/third_party/skcms/src/Transform_inl.h: Work around older
    GCC ICEs on arm.
    (Thanks Emilio Pozuelo Monfort)

firefox-esr (68.3.0esr-1~deb10u1) buster-security; urgency=medium

  * New upstream release.
  * Fixes for mfsa2019-37, also known as:
    CVE-2019-17008, CVE-2019-11745, CVE-2019-17010, CVE-2019-17005,
    CVE-2019-17011, CVE-2019-17012.

  * debian/control*: Bump nss build dependencies.
  * debian/rules, debian/control.in:
    - Build with nodejs-mozilla on jessie and stretch.
    - Build with nasm-mozilla on jessie and stretch.
    - Don't build with system libvpx on stretch.
    (Thanks Emilio Pozuelo Monfort)