Callable identity error when used in Sequence

[sgalles]

This code prints out falseinstead of true

shared void run() {
    value j = void(){};
    value m =  [j,j];
    print(m[0] == m[1]); // false instead of true
} 

[chochos]

Each reference to j is boxed separately, so they're different identities. But it can be fixed.

[chochos]

As of ceylon/ceylon.language#716 Callable.equals always returns false.