* Made use of qoca opt-in. You have to set the jam/environment variable
LAYOUT_CONSTRAINT_SOLVER to "qoca" to do that. Unfortunately it turned
the latest version of qoca is GPL (only earlier version were LGPL; the
license included in the downloadable archive was misleading), so we can't
use it. Complex layouts constraints that would require constraint solver
support are ignored until I've found a replacement.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22235 a95241bf-73f2-0310-859d-f6bbb57e9c96