[libxml2] (32 commits) Non-fast-forward update to branch python3-windows

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'python3-windows' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  b28571d... python: Port python 3.x module to Windows

Commits added to the branch:

  1358d15... Fix use-after-free with `xmllint --html --push` (*)
  bf22713... Validate UTF8 in xmlEncodeEntities (*)
  72b3c06... Fix dangling pointer with `xmllint --dropdtd` (*)
  1098c30... Fix user-after-free with `xmllint --xinclude --dropdtd` (*)
  5465a8e... Update INSTALL.libxml2 (*)
  babe750... Propagate error in xmlParseElementChildrenContentDeclPriv (*)
  33468d7... update for xsd:language type check (*)
  7279d23... Fix htmlTagLookup (*)
  3e80560... Fix line numbers in error messages for mismatched tags (*)
  de5b624... Fix handling of unexpected EOF in xmlParseContent (*)
  ce00c36... Store per-element parser state in a struct (*)
  bfd2f43... Fix null deref in legacy SAX1 parser (*)
  8598060... Patch for security issue CVE-2021-3541 (*)
  e1bcffe... Release of libxml2-2.9.11 (*)
  b48e77c... Release of libxml2-2.9.12 (*)
  a7b9f3e... fix: avoid segfault at exit when using custom memory functi (*)
  85b1792... Work around lxml API abuse (*)
  4fc473d... Add instructions on how to use CMake to compile libxml (*)
  7d4060d... Add missing file xmlwin32version.h.in to EXTRA_DIST (*)
  b92b16f... Remove unused variable in xmlCharEncOutFunc (*)
  2c0f2f0... Fix some validation errors in the FAQ (*)
  a1cac3b... Add CMake alias targets for embedded projects (*)
  a46e85f... Update CMake project version (*)
  13ad873... Fix regression in xmlNodeDumpOutputInternal (*)
  3e1aad4... Fix XPath recursion limit (*)
  92d9ab4... Fix whitespace when serializing empty HTML documents (*)
  22f1521... Use version in configure.ac for CMake (*)
  ec6e3ef... Patch to forbid epsilon-reduction of final states (*)
  8518af0... python: Port python 3.x module to Windows
  1e87f16... tstmem.py: Try importing from libxmlmods.libxml2mod if need
  f5c10af... Python distutils: Make DLL packaging more flexible
  a52b7e2... setup.py.in: Try to import setuptools

(*) This commit already existed in another branch; no separate mail sent