[dev-context] Local settings for frame borders

[Aditya Mahajan]

On Mon, 28 May 2012, Wolfgang Schuster wrote:

> I made also a few modifications on Marcos code, maybe a few of them should be moved to the core.
>
> It would be also a good idea to change the name of the module to 
> meta-imp-frame.mkiv or something similar.

In that case, we also need to change local and tight to \v!local and 
\v!tight (and define a variable for tight).

Aditya