OP2/PyOP2 — pull request #46 by wence- (2012-08-23 14:18:06+00:00)
Title: Add missing _arg_type slots to runtime_base classes

If a layer of the backend specialises Arg, the _arg_type slots in Dat,
Global, Mat and Map must be set. Otherwise the base class's _arg_type
is returned which will do the wrong thing.