New factory methods to create BytesMessage and MapMessage and set the payload

In JMS 1.1 the following methods on Session can be used to create a ObjectMessage or TextMessage and set the payload at the same time:

```
createObjectMessage(Serializable object)
```
```
createTextMessage(String text)
```

However there are no equivalent methods for BytesMessage and MapMessage. It is therefore proposed that the following new methods be added to Session (and MessagingContext):

```
createBytesMessage(byte[] bytes)
```
```
createMapMessage(Map map)
```

Start by reading the JMS 1.1 Session factory methods named in the issue and locating the corresponding Session and MessagingContext API definitions. Determine how the proposed byte-array and map-payload methods fit those interfaces, then verify that the new API is specified consistently and covered by the relevant tests.

Written by the indexing model from the issue text.