Nemo merge with Nautilus 3.6.3+ for Maya

This is a version of the Nautilus merge branch with all Nemo commits, except the HiDPI fixes, reuireing gtk 3.10.. 

This is actually not a merge request for master, but a request to track this branch as an experimental branch of Nemo. 

I have done this, because I get sucked with the work on the original branch https://github.com/linuxmint/nemo/pull/565, because of absence of a gtk 3.10 machine. 

Maybe this makes other user happy who have to stick with Maya for various reasons, but like to have the improved search of Nautilus 3.6.3