Bug#718691: [inventor] Please link -lXm before -lXt

[Graham Inggs]

severity 718691 grave
thanks

Marking severity: grave as the binaries below in current Sid all fail 
with the same error making Inventor mostly unusable.

Package inventor-clients:
/usr/bin/ivview
/usr/bin/SceneViewer

Package inventor-demo
/usr/lib/inventor/SceneViewer
/usr/lib/inventor/drop
/usr/lib/inventor/maze
/usr/lib/inventor/noodle
/usr/lib/inventor/revo
/usr/lib/inventor/textomatic