Change lilypond-book's LaTeX environment option placement (issue813048)

[Carl . D . Sorensen]

LGTM.

Thanks for getting us in line with standards.

Carl


http://codereview.appspot.com/813048/diff/5001/6001
File Documentation/changes.tely (right):

http://codereview.appspot.com/813048/diff/5001/6001#newcode72
Documentation/changes.tely:72: @example
I think it would be better to show both the new and the old syntax in
the chanes file.  A brief read here might cause somebody to think the
"options-first" case is the new version.

http://codereview.appspot.com/813048/show