A small addon to allow linking from the same source file multiple times using symbolic links
Tested on Linux and Windows.
Usage: To install, click "Download as Zip" on the green button, then install from file in blender, or clone into your addons folder directly with git
In the Misc tab of the 3D Viewport menu, Create Link just creates a symlinked file from the target, Link symlink creates a new link and opens the "Link library" dialogue for convenience.
Windows requires blender to be run as Administrator to allow symlink creation
This is because windows does not have an implementation for os.symlink() in python, so i had to use the Win32 API to do it: symlink() in obj_operators.py