[Bug 4815] inventor: merge new debian version

[StefanPotyra]

Public bug report changed:
https://launchpad.net/malone/bugs/4815

Comment:
just a cosmetic issue: please update build-depends according to
MOTUGLUTransition (i.e. libgl1-mesa-dev | libgl-dev instead of libgl1
-mesa-dev alone).

Cheers,
     Stefan.