For 'friend' entries, tell Doxygen to copy the brief description of
the friend in question.
Make relevant files members of the four "module" groups.
Reformat the Casting module documentation a bit for visual appeal.
Add in some explicit links.
Generally change references of the form '\ref TYPENAME "TYPENAMEs"' to
'TYPENAMEs (\ref TYPENAME)' or '(other expression of type name)s (\ref
TYPENAME) so that users can't mistakenly conclude that TYPENAMEs is the
name of a type.
Add member groups to class Module by request of NW.
Assorted small markup fixes
Remove various empty comments.
Make relevant files members of the four "module" groups. Reformat the Casting module documentation a bit for visual appeal.
Add in some explicit links.
Generally change references of the form '\ref TYPENAME "TYPENAMEs"' to 'TYPENAMEs (\ref TYPENAME)' or '(other expression of type name)s (\ref TYPENAME) so that users can't mistakenly conclude that TYPENAMEs is the name of a type.
Add member groups to class Module by request of NW.
NB this commit does NOT add any DOCFIXMES.