[jhbuild] Add patch to fix itstool build on Arch

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 83eba653ff333a8ca26916f86dd7c404b59fa0d7
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Jul 24 21:35:37 2014 -0500

    Add patch to fix itstool build on Arch

 modulesets/gnome-suites-core-deps-3.14.modules |    1 +
 patches/itstool.use-correct-libxml.patch       |   28 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 0 deletions(-)
---
diff --git a/modulesets/gnome-suites-core-deps-3.14.modules b/modulesets/gnome-suites-core-deps-3.14.modules
index 6971103..acd9ef4 100644
--- a/modulesets/gnome-suites-core-deps-3.14.modules
+++ b/modulesets/gnome-suites-core-deps-3.14.modules
@@ -863,6 +863,7 @@
             version="2.0.2"
             hash="sha256:bf909fb59b11a646681a8534d5700fec99be83bb2c57badf8c1844512227033a"
             size="96748"/>
+    <patch file="itstool.use-correct-libxml.patch" strip="1"/>
   </autotools>
 
   <autotools id="java-gnome" autogen-sh="configure" skip-autogen="never">
diff --git a/patches/itstool.use-correct-libxml.patch b/patches/itstool.use-correct-libxml.patch
new file mode 100644
index 0000000..51a25c0
--- /dev/null
+++ b/patches/itstool.use-correct-libxml.patch
@@ -0,0 +1,28 @@
+From d6ef86e2fb7bf9ddf888521e2c7dc5b5b7e4b6d8 Mon Sep 17 00:00:00 2001
+From: Michael Catanzaro <mcatanzaro gnome org>
+Date: Fri, 10 Jan 2014 23:50:52 -0600
+Subject: [PATCH] build: use $PYTHON when testing for libxml2
+
+/usr/bin/python is a symlink to /usr/bin/python3 on some systems.
+In this case, configure unconditionally checks for the Python 3 version
+of libxml2. Instead, use the version of Python found by AM_PATH_PYTHON.
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index c29efad..dbd0c7f 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -14,7 +14,7 @@ AM_PATH_PYTHON([2.6])
+ 
+ py_module=libxml2
+ AC_MSG_CHECKING(for python module $py_module)
+-echo "import $py_module" | python - &>/dev/null
++echo "import $py_module" | $PYTHON - &>/dev/null
+ if test $? -ne 0; then
+       AC_MSG_RESULT(not found)
+       AC_MSG_ERROR(Python module $py_module is needed to run this package)
+-- 
+1.8.5.2
+