added new parameter to the simplification tactics which indicates if
assumptions are to be simplified and/or to be used when simplifying the
conclusion. This gets rid of METAHYPS and speeds up simplification of goals
with big assumptions.
#! /bin/sh
#rm-logfiles: remove useless files from subdirectories
rm log */make*.log */make*.log.gz */make*.log.z
rm */test
rm */.*.thy.ML
rm */ex/.*.thy.ML
rm HOL/Subst/.*.thy.ML