rename prolog_parser_rebis to prolog_parser

also remove remaining extern crate statements that slipped through earlier

src/machine/streams.rs

@@ -1,5 +1,5 @@
-use prolog_parser_rebis::ast::*;
-use prolog_parser_rebis::clause_name;
+use prolog_parser::ast::*;
+use prolog_parser::clause_name;
 
 use crate::machine::machine_errors::*;
 use crate::machine::machine_indices::*;