Bug#729289: transition: openscenegraph

["Rebecca N. Palmer" <r.palmer@bham.ac.uk>]

As several packages have already been built against libopenscenegraph99, 
and at least ossim depends only on the libopenthreads(13|14|15) part of 
openscenegraph, those also need to be included:

title = "openscenegraph";
is_affected = .build-depends ~ /libopenscenegraph-dev/;
is_bad = .depends ~ /libopenscenegraph(80|99)/ | .depends ~ 
/libopenthreads(13|14)/;
is_good = .depends ~ "libopenscenegraph100" | .depends ~ "libopenthreads15";