[JSR308] Expression annotations

[Michael Ernst]

Someone had suggested extending JSR 308 to permit annotation of
expressions.  (Annotating the expression itself is different than
annotating the type of the expression's result.)  I have not heard any
support for this, nor compelling use cases for them that cannot be equally
well supported by statement annotations or annotations on types and type
casts.  Therefore, I propose that, for now, we should not spend effort on
expression annotations.

                    -Mike