Fix for password-protected .rar files

[Pavel Tsekov]

On Mon, 24 Jul 2006, Denis Vlasenko wrote:

> https://savannah.gnu.org/bugs/?func=detailitem&item_id=16967

Is this option supported on earlier versions of rar which might be
still used ?

> unrar of password-protected archives hangs (unrar opens
> /dev/tty and sits there, waiting for the password)
> The patch adds -p- switch.
> A few unsafe "$var" expansions are fixed in several etxfs scripts.

The patch includes random quoting of shell variables as well
as formatting fixes  - please submit a proper patch which does
only what it advertises.