Prior to this commit, the handlers and code objects which dealt with puppet functions were referred to as `FutureParserFunctions` and `ParseFunctions`. This naming convention will not make very much sense going forward when the future parser becomes the primary parser. Therefor, rename `FutureParserFunctions` to `Puppet4xFunctions` and `ParserFunctions` to `Puppet3xFunctions`.  | 
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| .. | ||
| base.rb | ||
| defined_type_handler.rb | ||
| host_class_handler.rb | ||
| puppet_3x_function_handler.rb | ||
| puppet_4x_function_handler.rb | ||