Desktop icons are now freely movable!

I just merged the latest movable desktop icon support to master branch.
So now it’s available in git repository. If you’re installing from git you’ll get it.

There are still some usability issues, but it mostly works quite well.
After two years, finally we have movable desktop icons. Really thank you all for the patience.

To test the latest source code and help debug, please follow this guide:
http://wiki.lxde.org/en/PCManFM_build_and_setup_guide

Cheers!