[itstool] Add missing build dep

[Kalev Lember]

commit d5fc88444a28fb3fa95fff9c50c7c33772061cea
Author: Kalev Lember <kalevlember at gmail.com>
Date:   Sun May 18 00:09:41 2014 +0200

    Add missing build dep

 itstool.spec |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/itstool.spec b/itstool.spec
index 5d98677..3af076b 100644
--- a/itstool.spec
+++ b/itstool.spec
@@ -9,6 +9,8 @@ URL:            http://itstool.org/
 Source0:        http://files.itstool.org/itstool/%{name}-%{version}.tar.bz2
 
 BuildArch:      noarch
+
+BuildRequires:  libxml2-python
 Requires:       libxml2-python
 
 %description