Added function norm_proof for normalizing the proof term corresponding to a theorem.
Added function norm_proof for normalizing the proof term
corresponding to a theorem.

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