more canonical names
misc tuning and clarification;
modernized specifications;
updated some headers;
replaced a couple of constsdefs by definitions (also some old primrecs by modern ones)
added explicit paths to required theories
migrated theory headers to new format
more tidying
Partial conversion of UNITY to Isar new-style theories
removed theory Option;
reorganization of HOL/UNITY, moving examples to subdirectories Simple and Comp