Ensure 'Notational Conventions' text is consistent across all of the ws-ra
specs.

Already highlighted is different wrt Ellipses (but other aspect of this section
should be checked):

An ellipsis (i.e. "…") indicates a point of extensibility that allows other
child or attribute content. Additional children and/or attributes MAY be added
at the indicated extension points but MUST NOT contradict the semantics of the
parent and/or owner, respectively. If a receiver does not recognize an
extension, the receiver SHOULD ignore it.

or

Ellipses (i.e., "...") indicate points of extensibility. Additional children
and/or attributes MAY be added at the indicated extension points but MUST NOT
contradict the semantics of the parent and/or owner, respectively. By default,
if a receiver does not recognize an extension, the receiver SHOULD ignore the
extension; exceptions to this processing rule, if any, are clearly indicated
below.

on 2009-02-26 proposal in
http://lists.w3.org/Archives/Public/public-ws-resource-access/2009Feb/0147.html

modified proposal on 200903-03 in
http://lists.w3.org/Archives/Public/public-ws-resource-access/2009Mar/0004.html

http://www.w3.org/2002/ws/ra/9/03/2009-03-03.html#6587
Resolve 6587 with {1,2,and 4} as in comment#2 but limit description of ... to
simply denote an extensibility point, and move explicit description of
extensibility behavior to a new section

EDITOR COMMENT - In progress (Katy)

Updates complete.