Named prefix operators should be more consistent with functions

[silentmatt]

Prefix operators have a lower precedence than exponentiation, which could be confusing when they are used like functions. For example, sin(2)^3 looks like it would be parsed as (sin 2) ^ 3, but is actually sin (2^3).

To be less surprising, a prefix operator (other than + and -, which don't look like functions) followed by ( should be parsed as a function call.