Merge branch 'master' into core-updates
Merge branch 'xorg-updates'
gnu: vtk: Fix build with mesa-10. * gnu/packages/patches/vtk-mesa-10.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/vtk.scm (vtk): Add patch. Add glu to inputs.
gnu: Add VTK. * gnu/packages/vtk.scm: New file. * gnu-system.am (GNU_SYSTEM_MODULES): Add it.