new backend: rar archive support (patch)

[Valmantas Palikša]

Binary package hint: gvfs

Hello, I've implemented support for rar archives. Did some extensive testing and it mounts 99% of rar archives without any problems.

Pros:
Supports seeking in uncompressed files, which makes it possible to watch movies, write to cd, etc.. directly from rar archives.
Supports compressed files (unrar required)
Supports encrypted files (unrar required). It asks password via gvfs mechanism.
Supports rar and rar3 split archives (*.rar, *.r00, *.r01, *.part01.rar.. etc)
Supports large files > 4gb for both archives and files inside them.

Cons:
Seeking not supported in compressed/encrypted files
Does not support archives with fully encrypted headers.

I've submitted this to gnome bugzilla, but unfortunately it did not receive attention yet.
http://bugzilla.gnome.org/show_bug.cgi?id=569126

Would be nice to see this included in ubuntu :)

[Sebastien Bacher (seb128)]

thank you for your work, the ubuntu team doesn't want to maintain such changes in a distribution specific way though so let's wait for GNOME comments

[Sebastien Bacher (seb128)]

Upstream rejected the new backend idea because the new libarchive supports rar that should fix that