Setting the install_path so you can run the installed chibi-scheme
on OS X without having the library in DYLD_LIBRARY_PATH.
Fixes issue #213.
Exporting file-link-status.  Fixing a bug in directory-fold-tree,
down should be called exactly once per directory with a matching up.
Providing read-link utility.
Adding group entry API.
Initial binary record types.
Adding tar library.
Rename bindings should be the default.
Exporting procedural interface.
Adding auto-trace feature with -t<module>.<identifier>.