- eliminated thin_leading_eqs_tac
- gen_hyp_subst_tac now uses asm_lr_simp_tac instead of asm_full_simp_tac,
in order to avoid divergence of new simplifier
use "../settings.ML";no_document use_thy "While_Combinator";use_thy "simp";use_thy "WFrec";use_thy "Partial";