* Upstream release: 109.0.5414.74.
* d/p/constexpr-doesnt-*.patch: refreshed & hunk added.
* d/p/build-with-old-libva-no-av1.patch: refreshed.
* d/p/c-std-17.patch: refreshed.
* d/p/gsimple-template-names.patch: added.
* d/p/use-python3-7.patch: added.
* d/p/warning-to-error.patch: added back with narrowing disable.
* d/rules:
  - delete use_allocator and use_allocator_shim from common_defines.
  - symbol_level 1->0.
* d/control:
  - Python 3.7 is build dependency.