Contribs: update libxml2 to 2.9.0

contrib/src/libxml2/SHA512SUMS

-e36ca96e5ba18f767346f1310c43d3c8c9a35c53252de18ad63ebce7f1f8df7ae40dd0719b2c6d78f5a64e61be154eec63a36ae738d29e93a9139c524a289ad4  libxml2-2.8.0.tar.gz
+b13268ea3725a8b534974ece33981b001324164e5687df94b0d15c77189070e2a5d9f08c1646e5492e70a607ca0adf00788772fcf300ac2d4a110e9bf57d4afe  libxml2-2.9.0.tar.gz

contrib/src/libxml2/no-tests.patch

---- libxml2/Makefile.am.orig	2011-11-26 20:53:51.147060747 -0500
-+++ libxml2/Makefile.am	2011-11-26 20:52:36.013140366 -0500
-@@ -8,10 +8,10 @@
+--- libxml2-2.9.0/Makefile.am.orig	2012-11-01 18:55:04.214524833 +0100
++++ libxml2-2.9.0/Makefile.am	2012-11-01 18:55:56.838557494 +0100
+@@ -10,10 +10,10 @@
  
- INCLUDES = -I$(top_builddir)/include -I@srcdir@/include @THREAD_CFLAGS@ @Z_CFLAGS@ 
+ AM_CFLAGS = $(THREAD_CFLAGS) $(Z_CFLAGS) $(LZMA_CFLAGS)
  
 -noinst_PROGRAMS=testSchemas testRelax testSAX testHTML testXPath testURI \
 -                testThreads testC14N testAutomata testRegexp \
 -                testReader testapi testModule runtest runsuite testchar \
--		testdict runxmlconf testrecurse
-+#noinst_PROGRAMS=testSchemas testRelax testSAX testHTML testXPath testURI \
-+#                testThreads testC14N testAutomata testRegexp \
-+#                testReader testapi testModule runtest runsuite testchar \
-+#		testdict runxmlconf testrecurse
+-		testdict runxmlconf testrecurse testlimits
++# noinst_PROGRAMS=testSchemas testRelax testSAX testHTML testXPath testURI \
++#                 testThreads testC14N testAutomata testRegexp \
++#                 testReader testapi testModule runtest runsuite testchar \
++# 		testdict runxmlconf testrecurse testlimits
  
  bin_PROGRAMS = xmllint xmlcatalog
  

contrib/src/libxml2/rules.mak

 # libxml2
 
-LIBXML2_VERSION := 2.8.0
+LIBXML2_VERSION := 2.9.0
 LIBXML2_URL := http://xmlsoft.org/sources/libxml2-$(LIBXML2_VERSION).tar.gz
 
 PKGS += libxml2