libxml2: upgrade 2.9.8 -> 2.9.9

- Drop backported fix-CVE-2017-8872.patch,
  fix-CVE-2018-14404.patch and
  0001-Fix-infinite-loop-in-LZMA-decompression.patch

(From OE-Core rev: dc51f92b2a6f2439fa93b9b0c1d8c4c13e884813)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/libxml/libxml2/python-sitepackages-dir.patch

@@ -1,4 +1,7 @@
-Allow us to pass in PYTHON_SITE_PACKAGES
+From b038c3452667ed17ddb0e791cd7bdc7f8774ac29 Mon Sep 17 00:00:00 2001
+From: Hongxu Jia <hongxu.jia@windriver.com>
+Date: Sat, 11 May 2019 20:35:20 +0800
+Subject: [PATCH] Allow us to pass in PYTHON_SITE_PACKAGES
 
 The python binary used when building for nativesdk doesn't give us the
 correct path here so we need to be able to specify it ourselves.
@@ -6,16 +9,18 @@ correct path here so we need to be able to specify it ourselves.
 Upstream-Status: Inappropriate [config]
 Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
 
-Rebase to 2.9.2
+Rebase to 2.9.9
+
 Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
 ---
  configure.ac | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)
 
 diff --git a/configure.ac b/configure.ac
+index ca911f3..3bbd654 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -813,7 +813,8 @@ dnl
+@@ -808,7 +808,8 @@ dnl
  
  PYTHON_VERSION=
  PYTHON_INCLUDES=
@@ -26,5 +31,5 @@ diff --git a/configure.ac b/configure.ac
  pythondir=
  if test "$with_python" != "no" ; then
 -- 
-1.9.1
+2.7.4