update to latest version (0.12.0) for lang/vala

[TLJ]

Hi:

The current version of lang/vala in ports-current is 0.10.4 and
there is a PR (ports/154172) containing a patch submission to update
to ver 0.11.4, but isn't closed.                  

The latest vala version is 0.12.0 (http://live.gnome.org/Vala) and I'd     
like to submit a patch to update the port to the current version.

Is the Gnome team actively working on an update at this time?  I don't want
to duplicate their efforts if an update is already in progress.

-tlj