Updates to splines from splines branch.
Merge branch 'master' into splines2
Merge branch 'master' into splines2
Merge branch 'master' into splines2

Conflicts:
	Source/Core/CatmullRomSpline.js
	Source/Core/HermiteSpline.js
	Source/Core/LinearSpline.js
	Source/Core/QuaternionSpline.js
	Specs/Core/CatmullRomSplineSpec.js
	Specs/Core/HermiteSplineSpec.js
	Specs/Core/LinearSplineSpec.js
	Specs/Core/QuaternionSplineSpec.js
Updates after merge.
Merge pull request #1362 from AnalyticalGraphicsInc/splines2

Splines 2