Temporarily disable Serialization namespace building

svn path=/trunk/mcs/; revision=3626

mcs/class/System.XML/System.XML.build

@@ -16,6 +16,7 @@
 			<sources>
 				<includes name="**/*.cs"/> 
 				<excludes name="Test/**"/>
+				<excludes name="System.Xml.Serialization/**"/> 
 			</sources>
 		</csc>
 		<copy file="../lib/System.Xml.dll" tofile="Test/System.XML.dll"/>