Implement:
  ndr_parser.pm:
   - if [charset()] specified, use instead of the for loops (call ndr_pu{ll,sh}_charset()

- True multiple dimension array / strings in arrays support (closely related to 
	things specified above)

- compatibility mode for generating MIDL-readable data:
 - strip out pidl-specific properties
 - convert subcontext() to an array of uint8.