exec-next: call tracing hooks

[rmosolgo]

Update execute_batching to call tracing hooks

use ... authorization: false significantly reduces the perf overhead to checking .authorizes?.

TODO:

• Add cache for .authorizes? checks
• Improve quality of .authorizes? checks: what about using def method_defined to detect when def authorizes? gets a new definition? Dynamic method(:authorized?).owner detection instead, that works with module inclusion