use faces on the mode-line for compile.el

[Nick Roberts]

 > If the mode-line for the compilation buffer would be a bit more
 > visible it would be easier to see if a compilation is still running
 > (which is handy if you have compilations that take a long time and
 > don't want to spend too much time checking if it's done). 
 > Also if the compilation fails it's nice to be able to see it faster. 
 > 
 > A simple patch can accomplish the above. It uses
 > font-lock-warning-face which is designed to be highly visible.
 > 
 > IMO this is a very nice feature to have, and simple to implement... 
 > 
 > Thoughts?

Font-lock-warning-face is normally used to report warnings or errors, not
normal progress like "run".

*Every* modeline already displays the keyword "Compiling" during compilation.

It will only be seen if the compilation buffer is visible and this is already
heavily fontified.

If we are ever going to get to a pretest then I think we need to stop
suggesting new features.

-- 
Nick                                           http://www.inet.net.nz/~nickrob