Added PpAllocShapeSpec and PpAllocCoshapeSpec
Fixed ambiguity in Allocation and added AllocateCoarraySpec transformation to combine into a list.
Removed some dead code.
Fixed Allocation parameters.
Brought up to date with latest LOPe.sdf.
Added transformations for CoAllocateStmt and CoDeallocateStmt.  Plus transformed THIS_IMAGE and get_subimage to 'return' 0.