fix problem of root coordinates
Merge remote-tracking branch 'upstream/hydro-devel' into hydro-devel-fix-root-coords
fix debug message
do not use visual and collision group
remove visual and collision if there is no vertices
Merge pull request #58 from YoheiKakiuchi/hydro-devel-fix-root-coords

Fix root coords
Merge remote-tracking branch 'upstream/hydro-devel' into hydro-devel-fix-visual-and-collision
Merge pull request #59 from YoheiKakiuchi/hydro-devel-fix-visual-and-collision

Do not use visual and collision if there is no vertices on collada file
kdl_parser: Adding kdl library explicitly so that dependees can find it
Merge pull request #64 from jhu-lcsr-forks/hydro-devel

kdl_parser: Adding kdl library explicitly so that dependees can find it
storing original mesh file name and location
Merge pull request #68 from YoheiKakiuchi/hydro-devel-store-original-mesh-name

storing original mesh file name and location
Fix clash with assimp 3.1 in CMake.