Added OMOP benchmarks for dispatch and field write overhead

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added GlobalRead benchmarks

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Added benchmarks for reading fields and executing primitives

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Global read intercession handler needs a second parameter

Also, fix the semantics in the standard domain to make sure that classes are loaded.
This requires also a new primitive #hasGlobal: in system.

Signed-off-by: Stefan Marr <git@stefan-marr.de>