changed the way a grammar is generated to allow the new parser to work;
also made a lot of changes in parser.ML and minor ones elsewhere
#! /bin/sh
#rm-logfiles: remove useless files from subdirectories
rm log */make*.log */make*.log.gz
rm */test
rm */.*.thy.ML
rm */ex/.*.thy.ML
rm HOL/Subst/.*.thy.ML