libgc should be updated

[Andy Li <andy@onthewings.net>]

Hi,

The libgc package in sid is at version 7.4.2, which was released in 2014.

There is a 7.4.4 package in experimental uploaded on 2016-11-20.

The latest 7.4.x version is 7.4.12.

It would be great if the package can be updated since there are quite many fixes as listed in its changelog: https://github.com/ivmai/bdwgc/blob/master/ChangeLog#L525-L712

Best regards,

Andy