libxml2: add shared library version info to libxml shared libraries

This fixes an issue with RPM where it checks version imformation for
binaries linked against libxml and fails because it's missing info

| error: Failed dependencies:
|              libxml2.so.2(LIBXML2_2.6.0) is needed by fmc-0.9.7+2-r2.1.ppce500mc
|              libxml2.so.2(LIBXML2_2.4.30) is needed by fmc-0.9.7+2-r2.1.ppce500mc
| ERROR: Function 'do_rootfs' failed (see

Note: fmc is just an example recipe/name

(From OE-Core rev: d1f1fec5c6fe980aaf2c1f1dc2a0e737f4adf2dd)

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/libxml/libxml2/fix_version_info.patch

@@ -0,0 +1,23 @@
+Upstream-Status: Already upstream
+
+From 00819877651b87842ed878898ba17dba489820f0 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Thu, 04 Nov 2010 20:53:14 +0000
+Subject: Reactivate the shared library versionning script
+
+---
+diff --git a/configure.in b/configure.in
+index 59d0629..a1d2c89 100644
+--- a/configure.in
++++ b/configure.in
+@@ -84,7 +84,7 @@ else
+   esac
+ fi
+ AC_SUBST(VERSION_SCRIPT_FLAGS)
+-AM_CONDITIONAL([USE_VERSION_SCRIPT], [test -z "$VERSION_SCRIPT_FLAGS"])
++AM_CONDITIONAL([USE_VERSION_SCRIPT], [test -n "$VERSION_SCRIPT_FLAGS"])
+ 
+ dnl
+ dnl We process the AC_ARG_WITH first so that later we can modify
+--
+cgit v0.9.0.2

meta/recipes-core/libxml/libxml2_2.7.8.bb

@@ -1,6 +1,8 @@
 require libxml2.inc
 
-PR = "r4"
+PR = "r5"
+
+SRC_URI += "file://fix_version_info.patch"
 
 SRC_URI[md5sum] = "8127a65e8c3b08856093099b52599c86"
 SRC_URI[sha256sum] = "cda23bc9ebd26474ca8f3d67e7d1c4a1f1e7106364b690d822e009fdc3c417ec"