Fix ImageViewer in VTK 6.1
Merge pull request #1017 from VictorLamoine/vtk6_fixes

Fix ImageViewer in VTK 6.1
Fix Eigen error
Merge pull request #1019 from VictorLamoine/renderView_fix

Fix Eigen error
further fix for issue #1012 when compiling on Windows 32bit (MSVC2010). If class BearingAngleImage is exported using PCL_EXPORTS, its base class pcl::PointCloud must be exported as well.
Merge pull request #1020 from magro11/PCL_EXPORTS_pointCloud

further fix for issue #1012 when compiling on Windows 32bit (MSVC2010). ...
Add results of the HRCS to the stereo module.

Added two classes two stereo module, new point type PointDEM.