FOP-3051: Upgrade to Commons IO 2.11

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1897722 13f79535-47bb-0310-9956-ffa450edef68

pom.xml

@@ -16,7 +16,7 @@
     <batik.version>1.14.0-SNAPSHOT</batik.version>
     <build.helper.plugin.version>1.9.1</build.helper.plugin.version>
     <checkstyle.plugin.version>2.14</checkstyle.plugin.version>
-    <commons.io.version>1.3.1</commons.io.version>
+    <commons.io.version>2.11.0</commons.io.version>
     <commons.logging.version>1.0.4</commons.logging.version>
     <compiler.plugin.version>3.1</compiler.plugin.version>
     <exec.plugin.version>1.4.0</exec.plugin.version>