Fix for password-protected .rar files

[Pavel Tsekov]

Hello Denis,

On Mon, 24 Jul 2006, Denis Vlasenko wrote:

>> The patch includes random quoting of shell variables as well
>> as formatting fixes  - please submit a proper patch which does
>> only what it advertises.
>
> Ok, the attached patch quotes some environment variables.
>
> vfs/extfs/* scripts seem to presume that there are no spaces
> in filenames. Yes, we typically do not expect $TMPDIR to contain spaces,
> but if it will contain them on some strange system, then what?
> Is cd $TMPDIR ok? No! cd "$TMPDIR"!
>
> The attached patch fixes these.

The attached patch again includes indentation-only fixes (rpm, trpm, uar, 
maybe others). Please, submit a proper patch.