Implemented CORE-4317: Make ISQL use new object API with 32-bit lengt…

…h for object sizes (messages, SQL statements, etc.)

Implementation also includes changes in GPRE, but this utility is not complete - only commands, used in ISQL,
are working in code generator for new API.
New interface IUtl is added - it performs tasks, related with database objects (attachment, transaction, etc.),
but not requiring routing in YValve, i.e. client only tasks.