Add == for equality, === for identity and ~= for match

[troyhen]

Expression a == b is the same as a.equals(b) in Java. Expression a === b is the same as a == b in Java. Expression a ~= b calls the multimethod match~boolean(a, b).

The following need to work:

val a = 'word
val b = 'wo
val c = 'rd
val d = b + c
a == d         # true
a === d        # false
a === d.intern # true
a ~= 'word     # true
a ~= String    # true
a ~= /\w+/     # true

[troyhen]

Done