[FIX] Added lxml as required module on setup

lp bug: https://launchpad.net/bugs/479915 fixed

bzr revid: jvo@tinyerp.com-20091111070257-b628xbpfl0v3fshd

setup.py

@@ -60,6 +60,7 @@ required_modules = [
     ('reportlab', 'reportlab module'),
     ('pychart', 'pychart module'),
     ('pydot', 'pydot module'),
+    ('lxml', 'lxml module: pythonic libxml2 and libxslt bindings'),
 ]
 
 def check_modules():