[editorial] change of element names

[Sunil Kunisetty <sunil.kunisetty@oracle.com>]

 I propose that all our Header element names start with the
 prefix 'RM', i.e., Request element be renamed RMRequest,
 PollRequest be renamed as RMPollRequest, and Response
 be renamed RMResponse.

 Reason being that the current names are too generic and
 could be confusing (to manual readers). Not an issue for
 tools though as they are all QNames.

 Just to jot some memories, all our names indeed used to start
 with this prefix a while back.

 However, they were removed later as people felt it is redundant
 as the namespace prefix (used in some of our examples) also
 use the word 'rm'.

 To me that's a flawed reasoning.

 Namespace prefix is just a namespace prefix. We can't mandate
 that consumers of this always use the prefix 'rm'.  Namespace
 prefix is just a convenience alias mechanism.

 It's valid and legal to use any prefix (foo:Request, xyz:InvalidMessageId
 etc..) as long as the prefix is correctly defined to our namespace.

 Infact, the usage of prefix is not always required if the default namespace
 is defined to be RM namespace. As a matter of fact, the examples in
 page 7-8-9 doesn't use any prefix for RM elements.

 -Sunil