staging still can't be built

[Graham Percival]

Building it manually, I see this:

cd ./out-www; texi2pdf -I
/home/gperciva/src/lilypond/Documentation -I
/home/gperciva/src/lilypond/input/regression --quiet
collated-files.texi
Error (196): Command token too long
^Cmake[3]: *** Deleting file `out-www/collated-files.pdf'
/usr/bin/texi2dvi: pdfetex exited with bad status, quitting.


Does anybody feel like doing a git bisect on staging to find out
what broke it?  In theory, we could make a copy of the curent
staging branch, do a few bisects, then set staging to be the last
buildable version... just to get *some* of the recent commits into
master, while others investigated the breakage.

Unfortunately this doesn't seem to affect a normal "make" or "make
test", otherwise Patchy should have found it at the Patch-review
stage.  So you're stuck doing a full doc build at each stage.

Cheers,
- Graham