RFR(M) :8138993: JEP-JDK-8046155: Test task: add check for Compiler.directives_print diagnostic command

[Pavel Punegov]

Hi,

please review the following change that makes CompilerControl tests check directives_print diagnostic command.

- Test framework got output processing for jcmd  processes that were executed during the test. 
- DirectiveBuilder and JcmdStateBuilder return a list of match directives that should be checked in output. 
- Executor handles multiple outputs from all of executed processes (main test VM and jcmds).
- New PrintDirectivesProcessor compares actual output with 
- Changed /../../test/lib to /test/lib to reflect recent changes in test.root


webrev: http://cr.openjdk.java.net/~ppunegov/8138993/webrev.00/ <http://cr.openjdk.java.net/~ppunegov/8138993/webrev.00/>
bug:  https://bugs.openjdk.java.net/browse/JDK-8138993 <https://bugs.openjdk.java.net/browse/JDK-8138993>
— Thanks,
Pavel Punegov

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