pass auto-proved exhaustiveness properties to tactic;
rightly use "%_. False" instead of undefined for unspecified conditions;
get rid of ugly "if True then ... else Code.abort" in auto-generated code equations;
src/Pure
src/FOL
src/HOL
src/ZF
src/CCL
src/CTT
src/Cube
src/FOLP
src/LCF
src/Sequents
src/Doc
src/Tools