Remove dot (SELinux)

GNU `ls' uses a '.' character to indicate a file with an SELinux security context:

--- ls++-org    2013-09-27 14:43:29.838145066 +0300
+++ ls++        2013-09-27 14:43:34.965145068 +0300
@@ -351,6 +351,7 @@
   $perm =~ s/(S)/fg($c[8],  $1)/eg;
   $perm =~ s/(t)/fg($c[8],  $1)/eg;
   $perm =~ s/(T)/fg($c[8],  fg('bold', $1))/eg;
+  $perm =~ s/\.//g;

   return $perm;
 }