Upgrade to libxml 2.9.2 and libxslt 1.1.28

third_party/libxml/src/python/Makefile.am

+# Makefile for libxml2 python library
+AUTOMAKE_OPTIONS = 1.4 foreign
+
+SUBDIRS = . tests
+
+docsdir = $(datadir)/doc/libxml2-python-$(LIBXML_VERSION)
+dist_docs_DATA = TODO
+
+EXTRA_DIST =                    \
+        setup.py                \
+        generator.py            \
+        libxml.py               \
+        libxml2-export.c        \
+        libxml2-python-api.xml  \
+        libxml2class.py         \
+        libxml2class.txt
+
+if WITH_PYTHON
+AM_CPPFLAGS = \
+        -I$(top_builddir)/include \
+        -I$(top_srcdir)/include \
+        -I$(PYTHON_INCLUDES)
+
+python_LTLIBRARIES = libxml2mod.la
+
+libxml2mod_la_SOURCES = libxml.c libxml_wrap.h libxml2-py.h libxml2-py.c types.c
+libxml2mod_la_LDFLAGS = $(CYGWIN_EXTRA_LDFLAGS) $(WIN32_EXTRA_LDFLAGS) -module -avoid-version \
+        $(top_builddir)/libxml2.la $(CYGWIN_EXTRA_PYTHON_LIBADD) $(WIN32_EXTRA_PYTHON_LIBADD) $(PYTHON_LIBS)
+
+BUILT_SOURCES = libxml2-export.c libxml2-py.h libxml2-py.c
+
+# libxml.c #includes libxml2-export.c
+libxml.$(OBJEXT): libxml2-export.c
+
+libxml2.py: $(srcdir)/libxml.py libxml2class.py
+        cat $(srcdir)/libxml.py `test -f libxml2class.py || echo $(srcdir)/`libxml2class.py > $@
+
+dist_python_DATA = \
+        drv_libxml2.py \
+        libxml2.py
+        
+CLEANFILES = *.pyc
+
+MAINTAINERCLEANFILES = libxml2.py libxml2class.*
+
+API_DESC = $(top_srcdir)/doc/libxml2-api.xml $(srcdir)/libxml2-python-api.xml
+GENERATED = libxml2class.py libxml2class.txt $(BUILT_SOURCES)
+
+$(GENERATED): $(srcdir)/generator.py $(API_DESC)
+        $(PYTHON) $(srcdir)/generator.py $(srcdir)
+endif
+
+tests test: all
+        cd tests && $(MAKE) tests