[AMQ-9058] Upgrade javacc-maven-plugin to 3.0.1

[mattrpav]

Build warnings that need review

Reading from file activemq/activemq-client/src/main/grammar/SelectorParser.jj . . .
Warning: Line 22, Column 3: Command line setting of "STATIC" modifies option value in file.
Warning: Line 23, Column 3: Command line setting of "UNICODE_INPUT" modifies option value in file.
Warning: Line 26, Column 3: Command line setting of "ERROR_REPORTING" modifies option value in file.
File "TokenMgrError.java" does not exist.  Will create one.
File "ParseException.java" does not exist.  Will create one.
File "Token.java" does not exist.  Will create one.
File "SimpleCharStream.java" does not exist.  Will create one.
Parser generated with 0 errors and 3 warnings.

[mattrpav]

@cshannon can you give this a look over? The upgrade created some new warning messages.

[jbonofre]

JavaCC needs to generate new files, but it will not generate boilerplate files unless they aren't there already. Try deleting all files generated by JavaCC and then re-running JavaCC.

[mattrpav]

@jbonofre yep, this cleared up. Either with a mvn clean like you suggested, or with the upgrade.

Current output looks good

Note: UNICODE_INPUT option is specified. Please make sure you create the parser/lexer using a Reader with the correct character encoding.
File "TokenMgrError.java" does not exist.  Will create one.
File "ParseException.java" does not exist.  Will create one.
File "Token.java" does not exist.  Will create one.
File "SimpleCharStream.java" does not exist.  Will create one.
Parser generated successful

[cshannon]

Looks good with the new output