8380219: Interpreter debugging would be easier if InterpreterCodelets could print their assembly code

[fparain]

Here's a small patch that enables the printing of interpreter codelets from a debugger without having to dump the whole interpreter with -XX:+PrintInterpreter. Details and examples are provided in the CR.

Builds on all platforms have been tested with Mach5.
The new print method has been tested locally during debugging sessions.

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Issue

• JDK-8380219: Interpreter debugging would be easier if InterpreterCodelets could print their assembly code (Enhancement - P4)

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