debugging output

[Aleksey Shipilev]

Hi guys,

Can we drop the debugging messages from the current code? It generates a
lot of garbage in our tests, like:

FindFirstOp using ShortCircuitTerminalOp.computeParallel serial default
FindFirstOp using ShortCircuitTerminalOp.computeParallel serial default
...(lots of times)...
FindFirstOp using ShortCircuitTerminalOp.computeParallel serial default

Granted, the test which print those messages should not be considered in
their seriousness, but this impedes our operations here. Alternatively,
we could guard that by the flag to print the message once per JVM run,
like [1].

-Aleksey.

[1] http://shipilev.net/pub/jdk/lambda/printOnce.patch