Changes to get castor oxm mapping working.

Message converters:
class org.springframework.http.converter.xml.MarshallingHttpMessageConverter
class org.springframework.http.converter.ByteArrayHttpMessageConverter
class org.springframework.http.converter.StringHttpMessageConverter
class org.springframework.http.converter.ResourceHttpMessageConverter
class org.springframework.http.converter.xml.SourceHttpMessageConverter
class org.springframework.http.converter.support.AllEncompassingFormHttpMessageConverter
class org.springframework.http.converter.json.MappingJackson2HttpMessageConverter
class org.springframework.http.converter.json.MappingJackson2HttpMessageConverter
class org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter

Server response:
curl -H'accept: application/xml' localhost:8080/version

<?xml version="1.0" encoding="UTF-8"?>
<version><major-version>1</major-version><minor-version>0</minor-version><patch-version>0</patch-version></version>