Silent/quiet builds

[Phil Holmes]

Question for GP really, but on the list for others to chime in as needed.

In the CG: 
http://lilypond.org/doc/v2.13/Documentation/contributor/useful-make-variables 
we already have a way of quietening the output.  This is used in particular 
in make with the font files and would, I think, reduce the make output 
significantly (can't try it yet, I'm in the middle of yet another complete 
doc build).  It seems wrong not to use this facility more - is it used? 
Should most of my "make quieter" changes be contingent on this variable 
being set?

(I assume its usage is make doc QUIET_BUILD=1)

--
Phil Holmes
Bug Squad