removed apache commons dependency

brouter-util/src/main/java/btools/util/StringUtils.java

@@ -0,0 +1,24 @@
+package btools.util;
+
+/**
+ * Some methods for String handling
+ */
+public class StringUtils
+{
+  /**
+   * Escape a literal to put into a json document
+   */
+  public static String escapeJson( String s )
+  {
+    return s;
+  }
+
+  /**
+   * Escape a literal to put into a xml document
+   */
+  public static String escapeXml10( String s )
+  {
+    return s;
+  }
+
+}