Put leading '*' in direntry.

Put leading '*' in direntry.
Accommodate new gfdl sectioning.
New option --recursion (the default) that is the inverse of --no-recursion.

New options --anchored, --ignore-case, --wildcards,
--wildcards-match-slash, and their negations (e.g., --no-anchored).
Along with --recursion and --no-recursion, these control how exclude
patterns are interpreted.  The default interpretation of exclude
patterns is now --no-anchored --no-ignore-case --recursion
--wildcards --wildcards-match-slash.