ensured that rewr_conv rule t = "t == u" literally not just modulo beta-eta
ensured that rewr_conv rule t = "t == u" literally not just modulo beta-eta

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle