Revert "component/libxml2: Version up"

This reverts commit 86707a66.

component/libxml2/buildout.cfg

@@ -9,9 +9,11 @@ extends =
 parts =
   libxml2
 
-[libxml2-common]
+[libxml2]
 recipe = slapos.recipe.cmmi
 shared = true
+url = http://xmlsoft.org/sources/libxml2-2.9.10.tar.gz
+md5sum = 10942a1dc23137a8aa07f0639cbfece5
 configure-options =
   --disable-static
   --without-python
@@ -20,13 +22,3 @@ configure-options =
 environment =
   PATH=${perl:location}/bin:%(PATH)s
   LDFLAGS=-Wl,-rpath=${zlib:location}/lib
-
-[libxml2-2.9.10]
-<= libxml2-common
-url = http://xmlsoft.org/sources/libxml2-2.9.10.tar.gz
-md5sum = 10942a1dc23137a8aa07f0639cbfece5
-
-[libxml2]
-<= libxml2-common
-url = http://xmlsoft.org/sources/libxml2-2.9.12.tar.gz
-md5sum = f433a39be087a9f0b197eb2307ad9f75

component/libxslt/buildout.cfg

@@ -14,7 +14,7 @@ shared = true
 # --disable-static is temporarilly removed due to build error
 # with xml2-config that does not support '--dynamic' argument.
 configure-options =
-  --with-libxml-prefix=${libxml2-2.9.10:location}
+  --with-libxml-prefix=${libxml2:location}
   --without-crypto
   --without-python
   --without-debug