Nautilus: Integrate file-roller and compressed file management

This project aims to make compression and decompression a transparent process to the user, minimizing interaction with archives. In the vast majority of cases, compressed files are just an intermediary point between the user and his content. It is desired that the user will have full access to this content right from the start, rather than being given the indirect means available now (for example, file-roller selectively decompresses files and stores them in a hidden cache). Also, since dealing with archives is actually dealing with files, the user will be able to do this from the file manager.

From the developer’s perspective, moving archive support to a library will allow for compression and decompression to be handled internally by applications. This aims to reduce the usage of file-roller so it can eventually be removed as an application.