Re: Fix 1240. (issue2065041)

[joeneeman]

Reviewers: carl.d.sorensen_gmail.com,

Message:
Thanks. In the end, I committed this mostly as-is, but a change I made
while working on 1252 allowed me to do without the dummy Paper_columns.


Description:
Fix 1240.

Include fixed spacings in the calculation of minimum spacings.

Please review this at http://codereview.appspot.com/2065041/

Affected files:
  M lily/align-interface.cc
  M lily/grob.cc
  M lily/include/align-interface.hh
  M lily/include/grob.hh
  M lily/include/page-layout-problem.hh
  M lily/include/system.hh
  M lily/page-layout-problem.cc
  M lily/system.cc