feature #3782: support multiple xpath values

xpath.rb will return multiple values if the xpath
starts with "%m%"

src/datastore_mad/remotes/xpath.rb

@@ -58,8 +58,14 @@ end
 xml = REXML::Document.new(tmp).root
 
 ARGV.each do |xpath|
-    element = xml.elements[xpath.dup]
-    values << element.text.to_s if !element.nil?
+    if xpath.match(/^%m%/)
+        xpath = xpath[3..-1]
+        ar = xml.elements.to_a(xpath).map {|t| t.text }
+        values << ar.join(' ')
+    else
+        element = xml.elements[xpath.dup]
+        values << element.text.to_s if !element.nil?
+    end
     values << "\0"
 end