[Patch] 'transparent vs. 'whiteout

[Marc Hohl]

Hello all,

after some discussions on the frog list I created a patch improving the
use of the 'transparent property. As Neil suggested, an invisible grob
should have no whiteout, and this is what the patch does.

After grepping through the code, I don't think that this will influence the
overall use of 'whiteout and 'transparent, but it will make things much 
easier
for tablature.

Marc

http://codereview.appspot.com/1681043