#21 RPM files are always extracted with full path

[Giuseppe Torelli]

Files inside an rpm are not processed correctly. They are always extracted with
the full path even though the 'Extract files with full path' checkbox is not
checked (and disabled too, BTW). This also results in a problem when trying to
view a file in an rpm with either of the context menu items 'Open With' or
'View' if the file is not at the top level in the rpm but rather inside a
folder/subfolder.

E.g.: Open an rpm in Xarchiver. Right-click a file within a subfolder, like
'/usr/share/applications/xarchiver.desktop' and select 'Open With', choose
SciTE, SciTE opens and tries to display file as
'/tmp/xa-drYidf/xarchiver.desktop' but file is actually extracted in
'/tmp/xa-drYidf/usr/share/applications/xarchiver.desktop', so the "file" in
SciTE is an empty file.