MLWCompiler.AusgabeTransformation.wortart: Grammatik-Varianten werden nun durch runde Klammern eingeschlossen. (noch Darstellungsfehler vorhanden!!!)

- parse.py: MetaParser functions now use self._grammar instead of self.grammar to avoid function call

- removed MetaParser._keep_node(). This kind of optimization is now done inplace which is considerably faster

- parse.py: OneOrMore, ZeroOrMore infinite loop detection replaced by a simple "break"; static analysis outcommented (never know when it might still become useful)

- parser.py Grammar.static_analysis_pending__ made cython compatible (turned into a list, because cython cannot write class attrributes for extension types)

- DHParser/syntaxtree.py Node.content property: No caching via Node._content any more, because this would require special using content-property while manipuliting the tree structure.