Ticket #2050: extfs/urar: disable user/system configuration for list and copyout operations.

My system wide .rarrc contains these switches

switches= -m5 -mdG -r -s -t -ol -tl

So whenever you list the contents of any archive or copy a file out of
it, RAR/UNRAR will traverse *all* sub directories (note -r, recursive
switch) in a current directory trying to find *all* archives with the
same name. So, the net result might be that unrar/rar will extract
the wrong file and spend a lot of time trying to find archives with
the same name.

That's why I strongly suggest disabling user/system configuration
for archive list and copyout operations (note the added -cfg switch).

I have contacted Eugene Roshal and he said that he won't disable -r switch
for extract and archive list operations, so, we can only fix this problem
on our side.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/vfs/mc-vfs/extfs/urar.in

@@ -28,7 +28,7 @@ fi
 
 mcrarfs_list ()
 {
-     $UNRAR v -c- "$1" | @AWK@ -v uid=`id -u` -v gid=`id -g` '
+     $UNRAR v -c- -cfg- "$1" | @AWK@ -v uid=`id -u` -v gid=`id -g` '
 BEGIN { flag=0 }
 /^-------/ { flag++; if (flag > 1) exit 0; next }
 flag==1 {
@@ -65,7 +65,7 @@ mcrarfs_copyin ()
 
 mcrarfs_copyout ()
 {
-    $UNRAR p -p- -c- -inul "$1" "$2" > "$3"
+    $UNRAR p -p- -c- -cfg- -inul "$1" "$2" > "$3"
 }
 
 mcrarfs_mkdir ()