More non-thinking changes

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rgl@1006 79a1b648-8b68-254f-b20b-c0b50f5137bf
More progress.  Now scene compiles (but probably doesn't work...)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rgl@1007 79a1b648-8b68-254f-b20b-c0b50f5137bf
Progress, I think.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/rgl@1008 79a1b648-8b68-254f-b20b-c0b50f5137bf