ocaml backend: support for primitive operators
ocaml backend: support for primitive operators

msprotz/FStar,hoheinzollern/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,FStarLang/FStar,aa755/FStar,A-Manning/FStar,YaccConstructor/FStar,A-Manning/FStar,msprotz/FStar,hoheinzollern/FStar,hoheinzollern/FStar,aa755/FStar,aa755/FStar,FStarLang/FStar,MallabaevAzamat/FStar,msprotz/FStar,YaccConstructor/FStar,hoheinzollern/FStar,msprotz/FStar,aa755/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,A-Manning/FStar,FStarLang/FStar,MallabaevAzamat/FStar