Merge pull request #593 from jkammerl/groovy-devel

fixing bad merge to ros-visualization/groovy-devel branch
Fix compatibility with latest OGRE

In PointCloudRenderable::getWorldTransforms, call parent method
to obtain the world transform, as the name the matrix is stored in
has changed in newer versions. In RosLogListener, use updated signature
for Ogre::LogListener::messageLogged, if OGRE is newer than version
1.8.0.
[bugfix] added ros::Time as Qt metatype for cross-thread time signals to work
Time Panel: added 'experimental' checkbox for new features
Merge branch 'groovy-devel' of github.com:ros-visualization/rviz into groovy-devel
1.9.23
Merge pull request #594 from spencerjackson/OGREFixes

Fix compatibility with latest OGRE
[bugfix] Fixed segfault introduced in #594:
PointCloudRenderable simply inherits world transform from parent.
[bugfix] #595 BoolProperty: Displays, Groups disable their children when their bool value is false (as before), default behaviour is not to do that (as in Fuerte RViz). Fixes issues with weird layout of properties in Point Cloud Transformers, where a propery has editable subproperties when it is set to false, e.g. the 'use rainbow' property for intensity coloring.