fusermount: Complete curlftpfs-mounts for "fusermount -u" (Debian: #685377)

Patch provided by Tim Riemenschneider <debian@tim-riemenschneider.de>

completions/fusermount

@@ -11,8 +11,8 @@ _fusermount()
             ;;
         -u)
             COMPREPLY=( $( compgen -W "$( awk \
-                '{ if ($3 ~ /^fuse\./) print $2 }' /etc/mtab 2>/dev/null )" \
-                -- "$cur" ) )
+                '{ if ($3 ~ /^fuse(\.|$)/) print $2 }' /etc/mtab \
+                2>/dev/null )" -- "$cur" ) )
             return 0
             ;;
     esac