[xml] Release of libxml2-2.9.1

[Daniel Veillard <veillard redhat com>]

  I actually tagged it in git and pushed the tarball and rpms
on the FTP on Friday, but forgot to send the announcement immediately,
sorry about that ! You can find it at the usual place at:
  ftp://xmlsoft.org/libxml2/

  This is mostly a bug fix release, as 2.9.0 buffer conversions still
had a number of issues left, hopefully all related bugs have been found
and killed now. There is still one bug left and not yet fixed about
XPath evaluation optimization added to 2.9.0 which broke correctness
in some cases.
  The 2 main features are changes needed for Python3 and a couple of
new functions for XPath:

Features:
- Support for Python3 (Daniel Veillard)
- Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)

Documentation:
- Add documentation for xmllint --xpath (Daniel Veillard)
- Fix the URL of the SAX documentation from James (Daniel Veillard)
- Fix spelling of "length". (Michael Wood)

Portability:
- Fix python bindings with versions older than 2.7 (Daniel Veillard)
- rebuild docs:Makefile.am (Roumen Petrov)
- elfgcchack.h after rebuild in doc (Roumen Petrov)
- elfgcchack for buf module (Roumen Petrov)
- Fix a uneeded and wrong extra link parameter (Daniel Veillard)
- Few cleanup patches for Windows (Denis Pauk)
- Fix rpmbuild --nocheck (Mark Salter)
- Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard)
- Fix Broken multi-arch support in xml2-config (Daniel Veillard)
- Fix a portability issue for GCC < 3.4.0 (Daniel Veillard)
- Windows build fixes (Daniel Richard)
- Fix a thread portability problem (Friedrich Haubensak)
- Downgrade autoconf requirement to 2.63 (Daniel Veillard)

Bug Fixes:
- Fix a linking error for python bindings (Daniel Veillard)
- Fix a couple of return without value (Jüri Aedla)
- Improve the hashing functions (Daniel Franke)
- Improve handling of xmlStopParser() (Daniel Veillard)
- Remove risk of lockup in dictionary initialization (Daniel Veillard)
- Activate detection of encoding in external subset (Daniel Veillard)
- Fix an output buffer flushing conversion bug (Mikhail Titov)
- Fix an old bug in xmlSchemaValidateOneElement (Csaba László)
- Fix configure cannot remove messages (Gilles Espinasse)
- fix schema validation in combination with xsi:nil (Daniel Veillard)
- xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf)
- Fix a few problems with setEntityLoader (Alexey Neyman)
- Detect excessive entities expansion upon replacement (Daniel Veillard)
- Fix the flushing out of raw buffers on encoding conversions (Daniel Veillard)
- Fix some buffer conversion issues (Daniel Veillard)
- When calling xmlNodeDump make sure we grow the buffer quickly (Daniel Veillard)
- Fix an error in the progressive DTD parsing code (Dan Winship)
- xmllint should not load DTD by default when using the reader (Daniel Veillard)
- Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera)
- Fix potential out of bound access (Daniel Veillard)
- Fix large parse of file from memory (Daniel Veillard)
- Fix a bug in the nsclean option of the parser (Daniel Veillard)
- Fix a regression in 2.9.0 breaking validation while streaming (Daniel Veillard)
- Remove potential calls to exit() (Daniel Veillard)

Improvements:
- Regenerated API, and testapi, rebuild documentation (Daniel Veillard)
- Fix tree iterators broken by 2to3 script (Daniel Veillard)
- update all tests for Python3 and Python2 (Daniel Veillard)
- A few more fixes for python 3 affecting libxml2.py (Daniel Veillard)
- Fix compilation on Python3 (Daniel Veillard)
- Converting apibuild.py to python3 (Daniel Veillard)
- First pass at starting porting to python3 (Daniel Veillard)
- updated configure.in for python3 (Daniel Veillard)
- Add support for xpathRegisterVariable in Python (Shaun McCance)
- Added a regression tests from bug 694228 data (Daniel Veillard)
- Cache presence of '<' in entities content (Daniel Veillard)
- Avoid extra processing on entities (Daniel Veillard)
- Python binding for xmlRegisterInputCallback (Alexey Neyman)
- Python bindings: DOM casts everything to xmlNode (Alexey Neyman)
- Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling)
- Adding streaming validation to runtest checks (Daniel Veillard)
- Add a --pushsmall option to xmllint (Daniel Veillard)

Cleanups:
- Switched comment in file to UTF-8 encoding (Daniel Veillard)
- Extend gitignore (Daniel Veillard)
- Silent the new python test on input (Alexey Neyman)
- Cleanup of a duplicate test (Daniel Veillard)
- Cleanup on duplicate test expressions (Daniel Veillard)
- Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick Gansterer)
- Spec cleanups and a fix for multiarch support (Daniel Veillard)
- Silence a clang warning (Daniel Veillard)
- Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard)
- rand_seed should be static in dict.c (Wouter Van Rooy)
- Fix typos in parser comments (Jan Pokorný)

  thanks everybody for your help, bug reports, fixes or comments !

Daniel

-- 
Daniel Veillard      | Open Source and Standards, Red Hat
veillard redhat com  | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | virtualization library  http://libvirt.org/