Hardlinks don't break if one of the links is deleted.
Oh, they are like reference counted data... well, that explains why it cannot create hardlink for the file in C:/Program Files without admin permissions.
But does this mean that if I do something to Linux lib files inside one Compiled folder (e.g. corrupt them somehow), then it will have these changes applied for every other compiled game on disk, and even ones inside AGS Editor installation?
More importantly, this is not good that there are incosistent ways to deal with Windows and Linux files. Maybe use same operation for any file that has to be shared/copied from the Editor (acwin.exe, Linux libs, and so on)? Then at least we will have to deal with only one set of issues.