No not LW 5.3.6, they fixed the issue with the file menu Add to Library with the first LW 5.4 beta for the OSX LW. That adds the files/folders to Library but they are not automatically shared. If you wish to try the beta, go to your personal Pro download page & find the link to the Pro beta version, else go to LimeWire 5.4.4 (Beta) - Lime Wire for the Mac Beta Basic version.

But still you should be able to drag & drop folders onto the Public Shared icon using LW 5.3.2 or 5.3.6 on Mac. This way the files are automatically shared.

See the changes made in each version here http://wiki.limewire.org/index.php?title=Changelog
Specifically the changes made in LW 5.4 to fix the issue were:
. Allow you to add folders to the Library or lists.
. Add an OS X style dialog so you can select multiple files and folders at once.