rm-logfiles

{HOL,ZF}/indrule/ind_tac: now calls DEPTH_SOLVE_1 instead of REPEAT, to
solve the goal fully before proceeding

{HOL,ZF}/indrule/mutual_ind_tac: ensures that calls to "prem" cannot loop;
calls DEPTH_SOLVE_1 instead of REPEAT to solve the goal fully

#! /bin/sh
#rm-logfiles: remove useless files from subdirectories
rm log */make*.log */make*.log.gz
rm */test
find . -name '.*.thy.ML' -print -exec rm {} \;