Commented Feature: Math.Truncate is not mapped in Linq, even though we have canonical function for it [854]

Calling Math.Truncate function calls not supported exception. This should be supported, since we have a canonical function Truncate for this purpose.
Comments: Removing comment about lack of EntityFunctions in EF6 - they are present but have been renamed to DbFunctions. We have an issue to consider renaming them back to EntityFunctions since this is confusing - http://entityframework.codeplex.com/workitem/832 Assigning to Future release to consider once EF6 is shipped.