Interface and FrameManager tests. Modified ArnoldFileFrameManager.

ArnoldParameterVectorTests unimplemented.
Finished auto tests for selected arnold class.

Fixed bug related to space removing in ArnoldInterface.
Fixed bug of operator of ArnoldParameterVector.
Added an extra ArnoldFileFrameManager to ArnoldAnimationPatch.
Added support for orientation in metadata. Changed lookat.

Lookat now means "to look at a point" not "to look along a direction".
Updated heights and orientations. Renamed fixtures.
S4 Jr 50 added. Fixed bad delete in ArnoldInterface.
Update top-level CMakeLists.txt to default to release build.  Of
course I can't test because of other build problems, so the chance
I've broken something is non-trivial.
Merge branch 'master' into tests
Merge branch 'chenxi' into test_merge