Consistent use of ClassUtils.forName instead of class.getClassLoader().loadClass

Issue: SPR-11780
ResultSetWrappingSqlRowSet preserves first matching column per name (as defined in ResultSet's javadoc)

Issue: SPR-11786
Polishing
Avoid JMSException in listener execution

This commit avoids throwing JMSException from the listener execution
as this is not allowed per spec. Our SessionAwareMessageListener
gives a callback that can throw JMSException and we have "abused" it
so far.

Typical message processing goes in those 3 steps:
* Unmarshall the javax.jms.Message to the requested type
* Invoke the actual user method (including processing of method
  arguments)
* Send a reply message, if any

Those three steps have been harmonized so that they don't throw a
JMSException anymore. For the later case, introduced
ReplyFailureException as a general exception indicating the
reply message could not have been sent.

Issue: SPR-11778
Polishing
Latest possible dependency updates for spring-orm
Add error code for SAP Hana

This commit adds a SQLErrorCodes instance for SAP DB, based on a
contribution from Andrew Clemons

Mostly based on SAP Hana SPS 07 with a few additional codes that are
only present is previous versions:

* -813 - Cannot connect to host somehost:30115 [Connection refused]
* -709 - Unknown host somehost:30115 [somehost], -709.]
* -708 - Cannot connect to jdbc:sap://somehost:30115 [Receive of connect failed.]
* -11210 - Invalid column index XYZ.

Issue: SPR-11770
Add GsonHttpMessageConverter

This commit adds support to read and write JSON using the Google Gson
library. GsonHttpMessageConverter offers default Gson configuration, but
can be customized by using GsonFactoryBean. GsonFactoryBean includes
several convenience properties for configuring the internal GsonBuilder
and the resulting Gson object.

By default Gson converts byte arrays to JSON arrays instead of a Base64
encoded string. GsonBase64ByteArrayJsonTypeAdapter provides support to
read and write Base64 encoded byte arrays, and can be enabled in
GsonFactoryBean.

RestTemplate will enable GsonHttpMessageConverter only if Jackson 2 is
not found on the class path, because by default GsonHttpMessageConverter
supports the same media types as Jackson.

Issue: SPR-9488