Orphaned bars

[Vaughan McAlley]

I work with renaissance choral music separated into sections with
double barlines. There’s not really any need to put a line-break at
these double bars, but it looks bad if the last bar of a section
begins a line or the first bar of a section ends a line:

https://docs.google.com/open?id=0B0YNwfxb13ZcY2E3NDAwZDAtZDEwNC00ZDA1LTliODktNDI2ZmM5MjNmODlm

What would be nice is to have an option where

% in global = {

\skip breve.*78 bar "||"
\skip breve.*66 bar "||"
...

expands to:

\skip \breve.*77 \noBreak
\skip \breve. \bar "||"
\skip \breve. \noBreak

\skip \breve.*64 \noBreak
\skip \breve. \bar "||"
\skip \breve. \noBreak
...


Either this or give orphaned bars a high ugliness coefficient when
working out the layout. Are either of these practical?

Vaughan