[Bug] Document providers

[Vixeliz]

Let's say we have two document providers in material files. DocProv1 and DocProv2. If you try copying a file from DocProv1 to DocProv2 let's say in DocProv1 the file's path from root of that DocProv is "games/test" and you try to copy the test file to DocProv2 in the "games/" directory. You will get an error saying can't copy a file over itself. At first I thought it was the way I was implementing the documentprovider for the application im working on but realized it happened with other apps documentproviders too. I then tested with totalcommander and it worked fine.