...now that triggers are not restricted to external programs and can be
perl code called by gitolite-shell (thus in the same PID), there's no
need to compute and pass along the times() array.
This also changes the arguments to POST_GIT; they're now the same as
PRE_GIT's.
- explicit 'list' gives way to mindmap, ...
- 'fm2mt.pl' to produce master-toc.mkd from the mindmap
- mkdoc no longer ignores master-toc.mkd, calls fm2mt.pl itself
and LOTS of changes to the actual docs
