Fixes #1054. Make extent primitive in picking Sandcastle example synchronous.
Merge pull request #1068 from AnalyticalGraphicsInc/issue1054

Fix issue #1054
Fix issue #1024 and #1052.
Merge pull request #1070 from AnalyticalGraphicsInc/cubeMapMaterials

Fix issue #1024 and #1052.
Merge branch 'master' into dynamicScene-properties