Parser ambiguity on "("

[mrkmarron]

There is an ambiguity in the expression and type parser:
(1 + 2) and (A&B)::foo()

The current lookahead will always assume the ( corresponds to an expression and then will be confused by the following ) after the B type.

Need to add a special case lookahead when parsing an expression to see if the (...) is followed by a ::. We may also want to deal with the <(... ambiguity as well where we need to distinguish the <(T)> case from the < (1+2) case.