how mrender can use the new gageShape in hooverContext, so that its usage is more consistent with the rest of how Teem uses gage
how mrender can use the new gageShape in hooverContext, so that its usage is more consistent with the rest of how Teem uses gage

git-svn-id: 9e9401559e51101c165cdce4d49b411eb20436ed@4650 3d70eeeb-363e-0410-a505-8a46323a89f2

Slicer/teem,BRAINSia/teem,Slicer/teem,Slicer/teem,Slicer/teem,BRAINSia/teem,BRAINSia/teem,BRAINSia/teem,BRAINSia/teem,Slicer/teem